OK, so Hip Hop Abs is a little repetitive. But it's so much fun and it loosens me up after all that body weight bearing torture (in a good way) that is PiYo.
The moves seem a little simplistic but if you're doing it right by half way through, you do feel like you're doing some ab work. Plus the floor work is minimal. It says there are no crunches in this program, but I'm thinking the 3 or so minutes of floor work is kind of suspiciously close. Then again, Shaun T just seems like such an unbelievably nice person that you forgive him the odd crunch here and there. I say this as someone who has yet to try T25 or Insanity.
Sweat hard folks and go live this year on purpose.