It didn't destroy my cassette but it did destroy my pride!  My clubmates spent all day mocking its golden colour .  Mockery aside, I wasn't too happy when it wore out after less than 1000 miles.  I'll be sticking with the 15 quid shimano silver ones from now on.

I've used the KMC silver X10-SL with missing link and have been very satisfied with it. Gold is too bling for me.

l have had a silver one last year, and done some 4000km on it, no probs. But l hate dirty chains and regularly take off the chain and clean it in a degreasing tank. Went to get a new one this year, but LBS had none in and as such had to go for a SRAM

gold far too bling

KMC Silver X10SL. Reliable and the link is excellent for easy chain removal and cleaning - though I just clean the surface rather than using a degreasing tank which tends to suck all the lubricating goodness from the insides of the links where it can't be replaced easily. Surface grime is the main cause of wear of the chain, sprockets and chainrings.

Oh and no problems with destruction of cassettes. 

you could get these to go with it.