These racquets have been discussed quite a bit here so I'm sure you would find a lot of info if you did a search. I compared all three RDX-500 racquest (mid, mid+, hdmid+) side-by-side and decided I like the Midplus (non HD version) the best. More power than the Mid but (for me) I didn't lose a bit of control. The power level of the mid is not as low as some would lead you to believe but the midplus is a definite step up. I'm getting past my middle age years and have realized that it's about time to let the racquet do some of the work.
TripleB