I find its more about the fill in the bag, than the bag itself.
My favorite setup is:
Caldwell Tac-Driver out front.
Varmageddon GameChanger rear support.
Its absolutely rock solid!
I bought a cheap front and rear support from Amazon and put fine sand in it:
Sand is NOT the answer.
Sand is heavy and not very flexible. Plus the dust would explode out of it just moving it! Like a pitchers rosin bag. I hated it. So I began looking at different fill options since I am going on a Prairie Dog hunt on Thurs with my Father In Law and uncle. My father-in-law needs a front & rear support. Lots of guys said corn, rice, kat litter, spec-light, airsoft BBs or plastic pellets from amazon and kept hearing about "Get-Lite" filler.
I wasn't going kat litter, corn, rice or anything bio-degradable. So plastic BBs/pellets and the Get-Lite were what I looked at.
The airsoft BBs and Amazon plastic pellets were like $38-45 depending on size or pellets, weight and total weight of what I needed.
For only $15 more I could get "Get-Lite" fill for a full GameChanger bag and reduce the weight from 6.5 lbs to 2.5.
AND THEN that got me thinking. I could PACK my GameChanger bag with me on hunts!!! For only $15 more!
So I went with the Get-Lite fill for my Varmegeddon Game-Changer. Then took the GameChanger fill, got rid of the sand, and put the GameChanger fill in my Amazon bags.
Last weekend, all 3 of us tested it out, and the GameChanger with Get-Lite is still unbelievable and now SUPER light. And the Amazon Bag is now legit too!
We run bipods out front prairie dog hunting. But pack hunting, I'll shoot off my pack and now use the GC for a rear support if I can get prone. If not, then I'll use my Quick-Stix out front and hug my pack for a rear support.
So its all about fill I've learned.
Very happy with my setup:
Tack Driver & GameChanger