M98 with a drop forward, (just to mention that they DO FIT in the GearSack) and too many upgrades to mention.
-Very durible, it would be hard to rip it at all.
-It feels great when you adjust it, it's got the cross-strap and hip pads on it. You could get on your bike and have no worries about it falling (I've done it, trust me).
-Your goggles stay proteceted, there's almost no way you could scrach your lens. They're kept facing away from anything that could damage them. Same goes for your tank, it's covered on all sides, no way you could scratch the fiber.
-Plenty of space for what ever you've got.
I got mine for $180, kind of pricey for a gear bag. It's hard to put a harness and tubes in there though, if you do, it'll be pretty stuffed.
For those of you who go out into the woods and play, it's hard to pack in any paint. You could, but that's if you don't have a whole lot of gear.
Without a doubt, this has been the most worthwhile investment I've made in paintball.
Once you get everything organized how you want it, it's great to use out at the field. Although it's probably better to use the GearSack as something to haul your stuff around in, and not to store it in.
If it could carry paint and tubes it'd earn a 10, but something can't be everything.
If you feel you can use one, you'll never buy another gear bag again. GREAT PRODUCT.