I'm not from PGH, but I was recently in Pittsburgh for a few days, and I went to Lucci's twice in a row! Really great pizza (and this is coming from a serious pizza fan who has sampled pies from around the world.) Not greasy, great crust - not too thick or thin, and a nice balance of cheese and sauce. Plus, you can get six packs to go, and on a Sunday to boot. Staff was pretty friendly and helpful, and made sure to give me lots of red pepper in a small takeaway container when I asked for it.
Overall, I say this is a darn good pizza joint, and I will be back on future trips to Squirrel Hill.