I think most people are using those kmc/trialtech "lite" chains. Ive found them to be stronger than the kool chains. They don't seem to stretch much!
Heatsink yellows are supposed to be good on a dead grind. You can get with with or without metal backings.
Ive just moved to stock so I don't know much about the tires but I'm using a der keiser at the moment and its brilliant! Better grip, stability and puncture resistance than any other mod tire I've used.