BlokeInAnArcher I did my PPL on a mixture of ARV, C152, AA5-A, C150, C172 and generally preferred the greater all around visibility of the ARV and the AA5-A.
Post PPL my flying has been predominantly in high wing types, Aerobat, Cub and Auster, all of which have had windows in the roof. I've rented Warriors a few times and was amazed at how Piper managed to restrict vision with the junior ATPL glareshield and the low topped side windows. I also found the seats less comforatable than the C172 (I'm 6'and "chunky"). Personally, I found the 172 more pleasant to fly and as long as you remember to lift the wing you are going to turn towards, the visibility is superior to the PA-28 (especially the earlier 172's). Also the 172 doesn't float like a PA-28 and finally you don't get that horrible tin can BOIIING noise from a slightly "firm" landing, not that I've ever done it of course)
blueskis the cabin of a 172 may be under water when the wings are on the surface but at least you have two wide doors to get out of. Never fancied getting out of the single door of a PA-28 in an emergency
I'd take a good C172 over a Warrior anyday but my real favourite fixed gear single would be an AA-5A or B.