even if the cheeper turbo is better than the other?

 

well i want the better one but i want a reliable turbo. i dont want to deal with turbo seals going out and what not. if the better one is the cheaper than cool but if i have to pay a little bit more for a better turbo, then that is what i am going to do. what would be a good set of compounds to make 550-600 reliably? i want to run either the stage 3 or preferably stage 4 sdx injectors. what turbos would go good with stage 3 and what turbos would go good with stage for?

ill probably be looking into getting a thicker head gasket, head studs, 3 piece exhaust, and what else is recomended for those power levels?