I recently asked the same question and could not find a negative comment about them. Pulled the trigger with Frank not too long ago. It's a project in progress so I do not have an opinion on them yet but I must say the quality looks very good. If you do decide on it give Frank a call he's a great guy to work with and I doubt you'll beat his prices. Here is a link to the thread I started hopefully the info the is helpful. Good luck.
http://www.pro-touring.com/forum/sho...light=air+ride