Have to admit if you are used to modern racquets (stiffness, added pop, larger sweetspots) then a MID may not be for you. A MID harks back to an earlier time, and yet of course the RDS 001 MID is a modernisation, an update that makes it playable against today's opponents.
I think if you are used to the subtle ways in which modern racquets with moderrn technologies aid your game, even if you aer not aware of that, then you'd best go for the RDS 001 98 in. MP - mainly because that will complement your game right now without too much of a learning curve.
The MP is fast and accurate. THe MID is impossible good, a player's racquet that however you must live up to. If you hit balls every second or third day then go the MID. If you are a weekend warrior then go the MP. THere are of course exceptions to every rule of thumb (which is all that I am usggesting here).