when traveling I use a neoprene/codura rolling suitcase I got from Academy for about 30 bucks, inside is either an 8 dollar el-cheapo duffel that I can easily replace when it tears or a mesh bag, travel in the suitcase, go to the boat in the mesh/duffel bag.
When not flying, however I opt for these as my gear bags:
http://www.rubbermaid.com/rubbermaid...=HPProd2939118
I think the 30 buck walmart bag will work just fine, and if you only get a couple years worth out of it, no big deal it was only 30 bucks!