If I had to chose one place to live in PA, it'd probably be eastern Potter county. Every blueline there is full of native Brookies and lots of creeks have Browns and Rainbows too, though I fish primarily for the natives up there. Plus, you're only 2-3.5 hours from anywhere on the south shore of Lake Ontario in New York with Steelhead, Browns, Lakers, and Pacific Salmon) as well as the Finger Lakes which hold Lakers, Rainbows, Browns, and LL Salmon. Honestly, I'll probably wind up moving to Potter county for the same reasons above within the next decade or so.
Erie is also a great place to live, I'm up there fishing pretty much every weekend from April through November both on the shore and on my boat fishing for Lake Trout, Steelhead, Browns, Pike, Drum, White Bass, Gar, and more. Not many inland trout streams though, just migratory Steelhead waters.
I'll end off with, do NOT move to Pittsburgh. This is where I live now and it, in my experience, is some of the worst fishing in the state. Have to drive at minimum 60-90 minutes to find a wild trout stream and many of the local waters are so polluted and urban that they're borderline not fun to fish. I still make the most of it and fish for stocked trout when they're present, as well as little Smallmouth Bass, Sunfish, and LMBs in my local creeks and lakes, but it comes no where close to comparing with the fishing in Erie, NCPA, or most of SCPA. At least, not for the species I like to target.
My two cents.