yeah i tend to agree tom, when you're at the pointy end of squeezing every last drop of power from your setup i'd go spend $2k on a zorst

having said that though, the sex-farce on my gtr works fine, as did the one on my foz, as did the one on my bug, its just bits of metal bolted together, better off spending money on tech like faster spooling quality turbo, tune, injectors etc first