I have seen conversation about this wheel before here, but unfortunately I was unable to find it.
Since I had some troubles with my order from zooplus, I didnt receive the wheel I ordered I started to think maybe I'd like to invest little bit more money for better quality wheel and when I tried to look for the silent runner wheel I wasnt able to find any place where I could buy/order it in uk. If someone could advise me about that (:
Amityville's link is for the standard one There is an ebay seller sells the standard one - the price works out about the same when you add their postage costs. The sugarglider shop sell it ready assembled which helps.