Hi Kingston,
I've done the Tae Bo...it's very hard, but it gives good results. Pilates works...but I feel like I'm in slow motion. I use Power 90...by beachbody.com.
I like something that keeps me moving...get great results..but doesn't kill me!!!
Using Power 90 gave me great arms...strong back and legs....and awesome abs!
It really depends on what you like. Your only going to stick with it if you really like it. There is also Slim in 6 by beachbody.com....that one gives fast results too! I believe you can find most of these on qvc.com...alot cheaper.
Good luck!
Sher