I have a bowflex. Honestly, I don't think they're worth the money. At least to me. I use it maybe 30 - 45 min a day, and the rest of the time is spent outside jogging/running. I financed it, so I'm going to be paying on this for a while. So if you're either a body builder, or you plan on doing something really time-consuming with this machine, I say just pay a membership fee for a local gym. Sure, it's nice having this on demand in the comfort of my own home, but the price just isn't worth it for what I could be doing the same and paying less a month somewhere else.
It's a quality machine though. It just comes down if you have the time to invest in it.