I am considering putting a clear bra on my 2002 M5 when it arrivs in late 2001/early 2002. It seems that Stoneguard and the 3M product, Xpel, are the best out there. I have heard that Stoneguard is better fitting/looking, slightly better quality but more expensive than Xpel. Anyone here have any thoughts pro or con on these products or on clear bras in general? Thanks for your help.