I have it and I like it a lot.
The workouts are killer. Great cardio and great for your core.
The bands and all the other equipment fit easily into the small bag they give you to hold them.
The strap they include so that you can hook the bands up to a door is very secure. I thought maybe it would feel flimsy or like the bands may come loose, but it's very secure.
I play tennis 3X per week. I'm going to try to make sure I do 1/2 hour power once per week and lift once per week as well.
I used to spend a lot more time working out, but playing tennis for 2 hours 3 times a week plus work really doesn't leave me much time.