Well your not after a power goal or 1/4mile time etc from what i can tell with your first post.
If you want something that kicks alot harder than the standard turbo, pulls all the way to redline, and spools about the same as the standard turbo.. Then either go for;
Highflow
HKS 2530/40 or even 2835 if you want more power
Garret GT28R
Otherwise the GT30 would be great, although these are rated at about 500hp which means you need to upgrade a few things first, IE injectors, fuel pump, ecu etc but that comes with any new turbo