Bluefin will give you less power than RTech, which based on your post may not be a bad idea. Also with bluefin you can take it back off yourself if you wasn't to sell the car on. I ran bluefin all the way to stage 3(now on Revo), it's ok, not the most power but self installable which appeals to some. It's def slightly less powerful than the likes of RTech, Revo, APR at all stages of tune, but for what you want might be ideal.