I think at the end of the day, the guys running standard RB26s SHOULD be aiming for -7s or -9s. It's all well and good to say how much better -5s are and how they're not laggy on the street (which they are lets be real), but at the end of the day a stock motor is going to last a lot longer at 340kw with the smaller turbos than it is with -5s and 380kw, and they're probably gonna do the same quarter mile. If you've got a built motor and preferably a 2.8, sure, -5s are perfect... Stock motor and -5s? No thanks, I've been in built 2.6s with -5s and found them mediocre off boost. Fantastic on boost... but just not fantastic off boost, which is where most people do 90% of their driving, and no, I'm not changing my driving style to drive above 3500rpm.