370Z Supercharger or Twin Turbo

luigi90210

Well like you mentioned in your post, superchargers have better street ability but tend to make less power and turbos make more power but lose some street ability.

It really all comes down to what you want to build and how you want the car to respond.
I will personally recommend a supercharger, it keeps a similar power band to a stock car because the supercharger matches boost with revs so the harder you push it, the more power it makes. Plus IMO the supercharger is the best mix between street ability and track day fun.