Tdo5 is a bigger turbo and can put out well over 300bhp. What sort of power are you going for?
wepr hybrid tdo4 would be your best option there are people that swear by them. They look like a very nice kit and can put out 300bhp with the right mods.
are you going forged 4e or 5e? Im using wepr's turbo atm and i am hoping to achieve in the 310hp marks on a fully forged 5e motor.
Speak nice to the bank manager lol