I own a Skylane RG, but have flown the whole PA-28 Cherokee lineup. I like the looks of the low wing, but they are too hot in the summer time. The low wings not only have lots of windows allowing sun in, the white wings reflect heat back to the cabin.
Unless you're looking straight down, the visibility out of the Cherokees is better than the Cessna high wing series (except maybe the 177 Cardinal). In the Cessnas, especially the Skylane, the panel sits high, so forward visibility is so-so. To look out the side windows in the Cessna, you kinda have to dip your head since your head is up in the wing root area. Passengers also expressed their preference for the low wing for visibility.
Getting in and out, the Cessna high wing has the clear advantage. When I flew Cherokees, I strategized my pre-flight and post-flight activities to minimize numerous trips up the wing and into the cabin, especially in the heat of the summer. The single door on the Cherokees is just a silly design. I worried this would be more of an issue as I got older, hence my decision to stick with a high wing.
Handling characteristics and landing technique differed slightly. Even the Piper Arrow's brick-like glide ratio with the gear extended was easy to master after a few landings.