The PA28 is just an all around better airplane than the C172. It's more
stable, it stalls and handles more smoothly. It lands nicer, it has a
higher useful load, it has a longer range, it has bigger back seats
(-181 vs 172), it is faster, etc. The PA28 is just a joy to teach in.
If you ever have to fuel it yourself, you'll fall in love with the
PA28, no ladder required. So, unless its raining, the PA28 is the best
plane all around.

-Robert, CFI