I've done them a couple of times with different instructors, and disliked them all. Guess that's why paint is made in so many colors

I find the low weights-high reps routines terrible for my joints. I'm very prone to tendonitis and overuse injuries, which BodyPump aggravates.. For me, BodyPump is one big "over-use, under-utilized" session.
But those classes sure are popular and crowded, so obviously there are a lot of folks who love it!
Mel