I've tried Storm before and I am currently on Green Mag. Honestly, the only difference that I've noticed is a bit of bloating which was caused by Storm.
I have a question on oats, and don't wanna start a thread, so here it goes: What's the best way to grind them in my shake?
Ex. grind first, then throw...
2 cups of milk
1 serving of natural peanut butter
1 serving of whey protein
1 serving of extra virgin olive oil
1 cup of oats
1 serving of cottage cheese
...
Honestly, you are much better off making your own weight gainer, but since you can't make your own and this is the supplement section not nutrition; i'd suggest Universal's Real Gains.