I'm looking at a Stillen supercharger as well. I've gone to Stillen a couple of times for my Uprev tune and every time I'm there they talk to me about their Supercharger and ask me if I want to go for a ride in their company supercharged 370z, but I haven't gotten the chance yet. I've read a couple reviews saying that they would prefer GTM products but I would use it as a daily as well. But if you're saying it's reliable then that helps guide me in a certain direction. I guess I just need to get behind the wheel of their company Z to really get a feel for it