I'm really enjoying Fitness Evolved 2013, and having the digital version removes one additional barrier to meeting my weekly program requirements (since all i have to do is click the icon, and not swap discs.) I really look silly as I try to learn each new move, but it's also fun and you can immediately feel that you are really getting a good workout. By the end of a two-part routine, my heart is racing, i'm panting, and at least one set of muscles is too tired to do any more. But just like a good trainer would do, when you choose a program (mine is one month) and a goal (weight loss, toning, muscle building, etc.) your virtual trainer will work on different muscle zones each day so that your muscles have time to heal and rebuild.
my only complaint is that there are a lot of different types of things to do, but not a whole lot of any one of them. Most importantly, there are only about 5 songs total for the dance activity (as far as i can tell so far). it's the funnest activity, but there's not much to it musically. even though there are extended routines you can unlock that feature different moves, it really gets boring hearing the same 4 or 5 songs every day in the dance mode. An easy way to fix this which would increase profits and not increase development costs would be to offer new downloadable songs which each include their own workout routine, which they could get away with selling for $2 or $3 each. I wonder if that's a possibility, I never played the other versions on other platforms, so I'm not sure if DLC was an option before.