I did my initial training in an Alpha 160a (NZ built robin r2160) so did all my stall training in that but as far as pa28 training, Ive done all my PA28 work in a -181 archer 2 and an archer 3. Stalling in that is the most boring stalling could ever be!! you can just hold it in the stall and when you are sick of that just add power, yes not technically a proper recovery but the plane doesnt give a crap.
The tapered wings are fitted to the -1x1 models and are very stable, some were fitted with flow disruptors on the leading edge of the inner wing section and they are there to further prevent wing drop.
The archer is a very easy plane to fly, it is forgiving (unless you are fast on approach then you will always do a floater). I preferred the alpha for going out to have some fun, its more responsive and you really feel at one with the aircraft but the PA28 is a better cruiser for your cross country training.