A lot of bag for the money - Voodoo Tactical Ultimate Drag Bag

This bag is great in that fact that it actually holds my Serbu 50 BFG. It has plenty of pockets with quality zippers and a dust flap for main zipper. Padding is sufficient and tie downs work great, even if you use the backpack straps. The bag is well made and seems very tough. We'll see over the years.
This is a great alternative to the large bulky hard cases that cost much more and are harder to store when not in use.