Anyone tried P90X or Insanity workout?

My husband, who's not fat by any means, but hadn't ever done a workout regimen wanted to start something to tone up- he did a lot of research and decided to start with their original Beach Body Power 90, it's not as intense to get going as P90X and I'm noticing a ton of difference in him.  The first few weeks were really hard for him, he couldn't actually complete most of the reps of anything- but now he can (like I said, he's slender, 33 waist) but hadn't ever been a regular workout person- It seems kind of boring to me and not my type of workout, but he's right on track, done is 6 days a week now for 6 weeks and there's notable difference in how tone he is becoming.

I prefer jazzercise because it's fun, I get to dance, there's good music and there's cardo and strength in the workout.  YOu can buy videos online or go to a class- I go to a class (well I did until 2 weeks ago when I sprained by knee- not in jazzercise- cleaning my house)... can't wait to get back to it.