What's your opinion on Cardio Musclecenter?
Also, do you have any special recommendations for cutting fat?
Cardio is good, but not everything. If you look at lot of elder swimmers, they get plenty of cardio swimming several hours per day. But as they exit the pool, you can see their flabby tits and flabber-sacked stomach (no offense, and with realization that not all swimmers have a flabbersack).
Thus, the name of the game is high intensity.
For example, yesterday, I did almost 30 sets on the bench alone with no rest in between. This kind of workout gives you the cardio, but also helps to reach goals of definition and endurance.