i had the same situation last year. I went for the rebounder in the end but the ball does bounce a little low and short depending on the weight of your shot (also if you are a hard hitter, it kind of moves to one side and you have to keep on going back to get it into the right position again) plus it can become pretty annoying when the srcrews come loose all the time but i like it, easy to move and i can practice the positioning of my groundstrokes much better
I would advise if your low on cash, stay away but if your prepared to invest then you shouldn't be too disappointed !!
Hope i helped