^Sounds good so far. I played with the PresMid for close to 4 years and now oddly enough, am messing around with the Ps90 and I agree, the variation available with the 90, in terms of spin, is 'head' and shoulders above the PresMid.
I've never served as mean as I am currently with the 90. Loopers that crush the court and bounce and swerve away on the T. Just with a bit of lead at the tip. Groundstrokes are completely different with the 9 though. Have to consciously put top on the ball so it doesn't fly. The PresMid, in comparison is kind-of 'under-powered', which makes it great for hitting flatter.
My wife currently plays with the PresMid and just puts massive amounts of top on the ball. She stays low through contact and really gets under the ball. Probably the only way to play this frame in the modern sense.
I'm all over the place with music, we've talked about this before.
It's different for musicians. I'll get done listening to Gojira, then rock some Huey Lewis and the News, then off to Slayer, Prince, Whitney Houston and end the night with some Talking Heads, Cure and Allen Jackson.
Really digging these guys lately btw. Saw them last year live and they're still in my head. Constantly rocking their album. They remind of the old-school 80s doom rock bands. Good stuff.
http://www.youtube.com/watch?v=CaAb421KUhk