I purchased a Rip 60, which came with 12 workout DVDs. It's quite a bit cheaper than the TRX, but high quality and I really like it. It's high quality and, unlike the TRX, the straps can move (I think they call it suspended rotation) or stay stable. When they're set to move, it forces the core to stabilize more and the cardio effects are great. I'll admit I haven't used it as often as I intended, but I really like it.