I almost bought a used P-38 earlier this year. It played really nice, but was overpriced for the market value.
I later saw two other guitars in that series, including another P-38, and neither of them played as well as the first one. There seemed to be quality issues with the P series necks.
The Flys are super nice but I don't see them in stores anymore. I haven't played one in a store since the 90s.
They don't have fret inlays which is a dealbreaker for me. I get lost in the high frets without markers.
Also, I would assume that parts would be hard to find, and expensive, too.
Dan Mumm plays a Parker: