Initially I also looked in CV, PQ and MM. However, I quickly found out that I can never buy a home in CV with a maximum budget of $500K. Then, it was between PQ and MM for me. I ended up choosing MM because it is close to my in-laws and we plan to have a kid and my mother in law will be the baby sitter. My wife also likes to be close to her parents. So because of personal reasons I chose the nicer part of MM which is around Calle Cristotal on the NW side of MM. And for the same price, you can get a better home in MM compared to PQ.
PQ schools are excellent. However, like AN has mentioned, MM schools are above average if you judge them by API scores. That said, I still like PQ better than Mira Mesa and I suggest that you look there first.
