Audi TT Stronic
Basically yes, the Cup will handle better than the 172, nothing a set of lowering springs cant fix, and the Cup will beat the 172 acceleration wise too, but not by massive amounts.
If you dont want to pay extra for toys, and want every ounce of extra acceleration you can get.. Cups for you, plus you may prefer the looks of the Cup.
If you want all the toys, luxuries etc etc.. get the 172/182