The MP-20 SEL is a phenomenal set. I decided to get my first fitting after playing for about 7 years. I tried 6 brands and landed on the set I thought I had no business trying. I had no intentions of trying any blades but it felt just like everyone says about Mizuno, and they are quite forgiving! (except that damn 5 iron... I wish that was an HMB like the 3 & 4 irons). I also can't say enough things about the fitting experience at 2ndSwing in Philadelphia. I've had uninspired trips like everyone at Golf Galaxy & Dick's, but I get better service each time I walk through their doors. They have better prices on the new stuff too!
I got a TS3 driver and 3wood, a jumble of different vokeys, and a Ping putter all "used" from 2ndSwing. Not even the pros there could tell if they were hit at all.
Last thing - I got a free sleeve of the new Mizuno balls with my irons, don't waste your time! They feel like old school NXT Tour S balls but with a less durable cover