It's been a while since I've had a look at this website and it's changed a bit. It used to list the rarity or difficulty level of finding each type of wheel. The main 2 contenders I would consider upgrading either of my GTs with are Watanabe (like Tom has) or Hayashi racing ( like Brett has) as they are the correct period mags which were used by the factory race teams. That website currently doesn't even list Watanabes for some reason like they used to a couple of years ago. The website is a useful referance for the miriad of wheel styles that have been made over the years though.