The PA28XXX1 designator for the tapered wing applies also to the Arrow. The PA28R200 is the Arrow 2 with the "Hershey bar" wing, the -201 is the Arrow 3 with the taper.
The Arrow 200 is a few knots faster than the 201. I recall the MTWA is less, though (not got the books here so can't check).
The Warrior 151 I used for my FAA training in Florida last year would cruise at 110 knots at 2400RPM (when trimmed right). Quite an impressive little beast, it was!
I'd previously flown a PA28-180 that could just manage 95 knots at 2400 (but that was in Detroit, so someone may have nicked one of the pots).