[Toyota fr-s]

If I were you, I'd wait and see what the manufacturers come up with and see which is more reliable before you make a decision. Your question is too broad and too many factors involved. At the end of the day, there are supercharger and turbocharger guys who will pick one because they are used to them and that's what they want.

Now days, turbos can respond quickly, be more efficient and safe if sized correctly and run low boost. On the other had, there maybe superchargers that could also be problematic. Just wait and let the companies compete. Plus don't forget costumer support is also very important. The good kits and manufacturers will stand out for sure.