Great upgrade! Bike is now 21g lighter ( I checked) than with stock spacers and the gloss finish looks great! Bargain upgrade - it's the sort of thing that makes your bike look a bit more expensive in the eyes of non-bikers!
Absolutely no difference between these spacers and others costing twice or three times the price, apart from a logo. The Superstar spacers are logo-free but more importantly are accurately made. Glossy 3M weave looks great.