If you want to spend the $ Musclesport Lean Whey, a more cost efficient option would be the Remix protein from bb.com and if you want new bars check out Barebells
Generally speaking more calories help put on more size and carb supplements are fast digesting calories so that would be the better option but if you can do without an intra workout supplement and...
when chitty guidance counselors make it seem like someone's major in birdhouse design is going to provide them with the means to pay off their loans it doesn't help
I mean forskolin is forskolin, the percentage shouldn't change the mechanism by which it works (which is what causes diarrhea), just how much you need to take but YMMV.
It might help a little with endurance but nothing dramatic, there are better ingredients like cordyceps and nitrates that seem to work better for weightlifting from anecdotal evidence anyway.