These are my favorite supplements for training. I have been using FRS for about 3 years because LANCE endorsed it. If it could make Lance faster, then by golly, it would make me faster too. Well, not sure about that but it does give me more energy for training (I take it right before a workout) and I need all the help I can get.
The other one, Acid Zapper, I read about in bicycle magazine a few months ago so thought I would try it. I can't find the original article but here is some info:
My stomach cannot handle the pill formula it seems (upsets it) but I put the powdered form in my training drinks and it really seems to help with muscle soreness the next day. I have heard others say this too.