I love TurboFire. It takes a bit to get the moves down, so if I couldn't quite get a combination I would just keep moving until I caught back up. After doing a video two or three times it became much easier.
Chalene keeps it so fun and motivating.. just looking at her is an inspiration in itself...
The videos are in a class format, and really helps keep me moving and motivated also. I like that the routines help keep a feminine form and don't bulk you up much but rather help lean and tone.
The videos have such variety that I don't get bored with it, which is key to me. I give them a thumbs up!
Good luck finding one that fits you!!