There is a vast range of travel bags & luggage to choose from - Travel Comfortable offers you some tips.

Carry-on: A soft sided case with no wheels is the best choice
The most important factor is to ensure that it is the correct size to meet airline regulations - as a guide, the maximum weight is 7kg, the overall dimensions should be 115cm or 45" - i.e. length + width + height.
Check with your airline for their regulations.

Soft-sided bags are a better choice because you can “squish” them into a compartment or under seat area. These bags accommodate odd sized or bulky items more easily and have some give if you just absolutely have to fit in one more sweater or pair of jeans. Soft-sided luggage is less likely to pop open at an inopportune moment and will generally accommodate more gear than a hard-sided case of the same size. Soft-sided luggage can often be shouldered, providing an alternate way to carry it.
Some essential features:

• At least two internal, full length or full width compartments
• Ballistic Nylon  material
• Padded shoulder strap
• Outside zippered pockets (lockable)
• Outside sleeve pockets
• External zippers that can be locked

Luggage: Whether you are going away for the weekend or 6 weeks, the size might alter but the principles are the same.

What to Look for in Quality Luggage:

So, you’ve made your travel plans for that long-anticipated vacation. Maybe it’s a once-in-a-lifetime trip. You’re ready, with maps, an itinerary and research on what to see and do when you arrive at your destination. All you have to do is pack your bags and board the train, plane, car or other conveyance. Everything is planned and handled, right? Well, maybe not…what about your luggage?
It is an important part of any trip. Let's look at:

• Style
• Price
• Number of pieces you’ll need and recommended sizes
• Soft- or hard-sided
• Frame
• Wheels
• Materials used in construction
• Interior features

Style: What Kind of Traveller Are You?

Style might not seem like an important factor when choosing travel bags, but a bad choice will haunt you throughout your trip. For example, if you’re fussy about your wardrobe, you should consider purchasing a garment bag. Garment bags minimize wrinkling but can be cumbersome to carry. Or maybe you’re a minimalist whose trip will be totally casual and informal. Then consider a sturdy duffel bag. Some travellers prefer backpacks while others like traditional suitcases. Regardless of what style you choose, make sure the luggage will be durable. 

Price: Getting What You Pay For

Inexpensive, poor quality bags can have an unfortunate tendency to pop open at the most inopportune times. Buy the best luggage you can afford. Choose luggage from a reliable, well-known manufacturer or designer.

Number of Pieces and Sizes You’ll Need: Travelling Light or Not?

At the very least, you’ll need a piece of carry on luggage like a tote bag and one other bag (either carry on or checked). A 56cm (22") upright rolling case will stow neatly in the overhead compartment  and will carry enough for a weekend. For a week’s sojourn, choose a 61cm (24"), either upright or traditional. If you’re going to be away for two weeks or longer, you may need a 73cm (29") piece of luggage, or a combination a small and medium-sized case. This is very much personal preference.

Soft-or Hard-Sided: Which is Right for You?

Soft-sided luggage and duffel bags are lightweight and expandable to accommodate all that extra stuff you’ll be returning with. Soft-sided luggage fits easily into compartments or racks or stows neatly under a seat. Generally, soft-sided luggage is less durable and doesn’t do as good a job at protecting your possessions. Hard-sided luggage is sturdier and protects your stuff better. However, this type of luggage isn’t expandable and can be bulky. Hard-sided luggage is also heavier before it is packed. Regardless of what type you choose, be sure it has wheels. Rolling luggage is easier to move and handle.

Frame: The Backbone of Your Luggage

Frames can be made of metal, fibreglass or plastic. Fibreglass is generally more durable than plastic, unless the plastic is reinforced in some way. When choosing luggage with a metal frame, look for aluminium frames that are strong but lightweight.

Wheels: The Finer Points of Luggage

Wheeled luggage allows you to manoeuvre your luggage easily. They also protect the bottom from wear and damage. Especially durable are in-line skate wheels.

Materials Used: Durability in Construction

Hard-sided luggage is generally made using an injection moulding process for plastic and have the added security feature of combination locks but are heavy before you start packing. Soft-sided cases are usually made of fabric with partial frames and reinforcing plates where needed. If the fabric is advertised as “ballistic,” it means that it is woven in a similar manner to bullet-proof vests. Make sure your soft-sided luggage is waterproof or water-repellent.

Interior and Exterior Features: Staying Organized

The interior of your luggage should have pockets and compartments to facilitate packing. Mesh pockets are handy because you can see the contents. They also provide ventilation for the contents. Many cases have straps inside that keep the contents from shifting.  A zippered external pocket or two is desirable. On upright cases, the telescoping handle assembly should be on the inside, not the outside of the case. On many uprights, there is an auxiliary strap to which you can attach your tote bag or other small piece of luggage to make moving the items easier. A zippered gusset is available on some models. When unzipped, the gusset expands the suitcase to accommodate all those extras you’ll be bringing home.

Conclusion: Quality is Always the Right Choice

People who think nothing of spending thousands of dollars on a holiday often underestimate the importance of their luggage. Quality luggage is always worth the investment and will serve you well long after the memories of your vacation fade. Buy the best well-made luggage you can afford. Your holiday will be all the more enjoyable for it.