I'm basically going to reiterate what everyone has pretty much said...

a turboed LS will be much faster than the 170hp VTEC engine in the GSR. It's all about preference though. To me, there's nothing like the adrenaline rush when it climbs past 6k RPMs. But turbos are sweet too, and much faster. I just prefer not to mess with the engine too much, especially with the whole warrenty thing.

VTEC is not overrated, it does exactly what it is supposed to do. It's not meant to make a car ridiculously fast, like some disillusioned people may believe...