Im pretty open minded when it cmes to rolling roads but I would defo not use JAP performance after a conversation I was involved in with the owner and I wouldnt use STAR after the carry on they had trying to run my elise( the blocked both air vents to engine comparment with tie strap then tried to force air in both sides of the rad.)

Extreme seem to get good reports altougth a few of their power figs seem suspect( colcos's 3 door on here got a FAR higher power reading than expected)

The thing I like about Alan and AVA is that he will never try to make excuses or tell lies about whats happening with your car and he can recreate true road condtions with ease so what you see is what you get on AVA rollers which IMO is a NOT always the case on many others.