I mostly use KMC Z510HX (1/8") and Z610HX (3'32") chains. Both of these chains can be found for $10-12. These are more durable than the low-end Z410 chain, which is more widely available and made of lesser materials. I've tried lots of more expensive chains, up to and including the most expensive NJS chains, and found none of them to really be an improvement over the Z510HX or Z610HX chains. If longevity and strength are your main concerns, there really is no point in forking out more than $20 for a SS/FG chain.