I certainly prefer the Cherokee 140C's handling to the Warrior II. It always feels to me that the Warrior's wing is almost too efficient as it seems to have poorer gust response and is more inclined to float in the landing flare at light weights even after flying the POH approach speed - which is higher than it needs to be, to my mind!
The PA28-140 also has better visibility from the cockpit than the Warrior, although the cockpit width is slightly less. But nice when solo. In fact, once you get used to it, the roof-mounted trimmer is actually easier to use than fumbling between the seats for the trim wheel in a Warrior.
Stalling is a complete non-event in either variants. In fact that's a slight problem as it leads some students to think that all aircraft have such benign stalling behaviour. A trip in a T-67 soon disabuses them of that thought though!
Faults with the PA28-140? Dismal fuel gauges and the lack of a 'both' position on the fuel selector, low geared pitch trim, awkward rudder trim - and just a single entrance door. Otherwise it's a simple, reliable workhorse with no real vices.
Performance? Well, one of mine will do 117 knots (yes, knots not mph!) straight and level at 1500 ft with the standard engine and prop - you have to be careful to keep the RPM below the redline though! About 2250 RPM gives a more frugal 90 knots. And that's a 1974-model with around 23000 hours on it.....