Hi Jimi
My gold DID x-ring is fine. I had a gold Afam on my S2R, which faded quite quickly. But the finish on the DID is much better and still looks as good as new. Also, the Afam only had coloured outer plates while all the DID plates are gold. So thumbs up for the DID.
I've changed the front sprocket for a 14 tooth Renthal and that's fine. I've no experience with aluminium sprockets but logic would suggest they're not going to last as long as steel.
When I need to change my sprockets, I'm going to try a Supersprox Stealth sprocket (part no. 733-525-39-Silver). They have a steel chain ring mated to an aluminium centre so you get weight saving and durability. The centres also come in black, gold or red
https://www.supersprox.com/superspro...lth-sprockets/
For the front, I'll try an Ognibene silent sprocket
http://www.ognibenechaintech.com/en/...i-OE.html#null
These have a rubber damper like the OE sprockets and are supposed to be quieter. I certainly noticed a bit more 'chirping' noises when I changed to the Renthal. Whether that was because of the lack of damping rubbers or because it was one tooth smaller, I don't know.
PS it looks like Damien has gone for a stealth sprocket in your other thread
http://www.ukmonster.co.uk/monster/s...ad.php?t=55139