At 18,000 miles, I replaced my OEM chain with this
RK Racing Chain 520-SO-106 106-Links O-Ring Chain with Connecting Link on Amazon for $56 in June 2016 It looks like the price dropped slightly since then.
So far so good with the chain. I have put about 8,000 miles on the chain since then it it seems to still be in great shape.
The next time the chain needs replacement, I'll swap the front and rear sprockets as well.
Best of luck to you.