I do bootcamp classes regularly. I absolutely love it! The bootcamp is always something different, and everything is modified to your level, as you progress they push harder. I have also done circuit training, it was a good class but it was set up as timed stations, moving from one to the next, one would be a fast cardio then the next a weight training-
I was always active before lap band and now
I like to do a variety of exercises- I jog, do bootcamp, kickboxing, High intensity, and weight training
Whatever you find that you enjoy, stick with it- good luck