I have one, got it as a birthday gift when I was 7 months pregnant so havent used it without the belly out front yet. But I have to say I really like it. I like that I can get some exercise in while DS takes a nap during the day, or at night when he has gone to sleep. Its great that it count up how much time you have spent in total, and I find that really motivational. I was fairly active before pregnancy, and I find several of the exercise def give me a workout. I'm new to yoga though and find it really easy to learn from.

Maybe instead of buying one, go to your local blockbuster and hire one out first and see if it will work for you. My mum got it for me, and she's had a few goes but doesnt really like it, so each to their own.