I have the Roush (duh). It gets stiff going from left to right when it's real hot. I've seen a lot of similar complaints on other forums. I'm not sure I would recommend it.
This is true but the new owner, MJ Acquisitions, will warranty parts
http://www.autoblog.com/2009/03/09/report-saleen-inc-disolves-warranties-new-owner-takes-over/
What are they made of? If they are chrome, any wax will shine them right up. Aluminum wheels need to be handled different if they are brushed or clearcoated.
Soap and water will take off brake dust, you don't need a special cleaner