I know this topic has been revisited a few times, but I thought I'd add a few personal comments after playing for a couple of months now regularly with a midsize (IPrestige Mid, RDXmid) and a midplus (Yonex Ti80). To me, the pros and cons just about cancel each other out. I find that midsizes do provide more accuracy, which is important if you have a high-risk game going for the corners and lines. While the difference isn't huge, I definitely noticed my error rate with the midplus (Ti80) due to missing the lines going up by about 15%. However, on return of serve, the error rate due to mishits increased with the midsize vs. the midplus, especially the IPrestige Mid, by about 20%. There are more mishits in general with the midsizes but the difference is small except on *return of serve*. And this is off fast serves (90+mph). A few of my tennis opponents commented that I was bit more accurate and effective with the midsizes vs. the midplus. One thing is for sure, against a very big server I would have to use the midplus for return of serve. So for me, the difference in performance of midsize vs. midplus is small enough that it's not worth agonizing over and I simply play with a racket that I feel like on a certain day. I sometimes switch rackets in the middle of a match just because I want a different feel, almost like wanting a different "flavor".