I would recommend the hybrid of PiYo and FocusT25... it is the perfect combination of cardio and strength. I've done Insanity but never got through it. I was extremely over weight at the time. I have done Hip Hop Abs and it was fun. I did FocusT25 and then got pregnant again! Just had my baby 5 months ago and in the past 4 months, I've lost 44 lbs (20 kilo) using FocusT25 and Piyo hybrid.
I plan on going back to Insanity after I finish this program (in 6 more weeks) to tone and get that push. ;)