If you buy in bulk, check out Jake's Marketplace. Those same X43.5 airtites are $.42 if you buy a case of 250. Click the link below to see Jake's. Also fast shipping and good quality.
The black ring airtites seem to be the most popular with many collectors and those who buy on eBay, but I agree with Wes, they will tarnish the rims and make them look old. The white rings don't seem to do it as badly.
