There is a very tight spot in the chain currently installed on my bike and it needs to be replaced. Currently riding a 2009 zx6r, both on and off the track. Anyway, i've decided to change the chain myself. Watched a few youtube videos, seems like a simple enough job. I've been doing a bit of research into chains and i was just wondering if anyone can give me advice regarding which brand /model would suit me best. So far the EK520MVXZ and the DID520VX2 seem to be the best bet. Are these chains more or less the same? Also, what brand would you suggest for the sprockets? i want to keep stock gearing. I would like something that will last a while, doesn't have to be super light weight. last but not least, can someone with a powder coated EK520MVXZ comment on how the chain looks after 6 months. The colour shouldn't really rub off since the outside of the chain doesn't rub against anything.