I designed the Sterling one. It has the following features not found on other bags;
It has a zipper that goes the length of the case and down one end for easy loading and unloading.
It has a COMFORTABLE side handle and top handle for easy carrying and loading/unloading into cars, luggage trolleys etc. The handles all lock with velcro so the case can be attached to other luggage if need be.
The shoulder strap is ergonomic, FULLY ADJUSTABLE in any direction and REVERSIBLE in 2 seconds for wear on either shoulder. The strap features a rubber non-slip pad so that you are not fighting with the case as you are moving through the airport.
THe case itself is made of strong nylon and uses a large heavy duty zipper with zipper pulls that are lockable. It is nicely padded and FITS two 2x4 cases easily.
All that for $39.00
http://www.cuesight.com/sttrbg.html
As someone who has traveled all over the world many times and used all the other ones, INLCUDING duffel bags and softball bat bags I designed this one to do just exactly what I wanted for cue cases.
Regarding duffels you need to consider the following things:
Make sure that the OPENING of the duffel will accept your case. Don't go by the total length. Most 32 inch side loading duffels DO NOT have a large enough opening to accept a cue case without some serious effort if at all. Make sure that the INTERIOR measurement is enough. You never know how the website measured the bag and whether the measurement is interior capacity or exterior size. Finally, know that most duffels are not padded so you will need to cushion your case with something. That said I have used oversized duffels quite a bit and find that they are very useful.
Regarding things like the TuffPak that was shown in an earlier post: There are many such solutions that will work for FAR LESS than $300.
Go looking for tradeshow cases, light cases for photographers etc... you can find some that would work sizewise for anywhere between $50 and hundreds.
Finally, you can go to Home Depot and make one out of plumbing tubing and duct tape for the easy way and with latches and such for the harder way.
Or just buy ours for $39 and be worry-free.
