Not that I blame anyone here but the reply was a bit late. I went ahead and purchased it about a two weeks ago. Thanks for the advice though. I do belong to a gym and have been lifting weights for a couple of years now. I just feel like I've reached a certain peak in my gains so I wanted to try something different for a little while. I realize that even the most decorated MMA fighters are not immune to promoting gimmics (i.e. Xience) but I was rather impressed at the list of fighters who used the TRX (St.Pierre, Huerta, Bas, and so on) and it's not like they are cashing in on it. The day after the first work out I felt the soreness, even around my core though I didn't specifically target this area during the work out.
Anyway, I like it so far. If the novelty wears off, I'll stick with the weights.