I just got mine and assembled it. I went with Gold's Gym Circuit Training System. The walkway I had planned on using it in was too wide but it works perfect in the doorway to my room which is preferable actually. I chose this set because it came with the ab straps while the other was a mail in order only. So far it seems to be working as I hoped. I'll know better when I do my full back workout tonight. I've been doing hanging leg raises for my lower abs on the rafters in the garage, but my arms give out before my abs so it will be nice to have the straps for some support.