Do you plan on modding it?
Stock vs Stock, I'd probably get the Mini. The TT can be fun when you bolt stuff to it and you won't be limited by FWD.
My dad has an MK1 TT 225 quattro with like 30k miles on it. It's chipped/exhaust/coilovers/swaybars (basic bolt ons) and it's fun to drive, much moreso than stock.