I replaced the rear drive chain today on my 2011 G5 Deluxe with a RK 530 KS heavy duty chain. This is a non-O-Ring chain but that's fine with me. So was the one I removed.
The last time I changed the rear drive chain was back in January, 2012.
The OEM chain had gone a total of 3,566 miles and during that time it needed adjusting 4 times. When I removed it, it was totally worn out. The wear was due to poorly heat treated links that rapidly wore as I rode. I am kind of a nut when it comes to keeping my drive chain lubed so I know a lack of lube isn't the reason it wore so quickly.
I replaced it with a Made in USA, Diamond brand 530 chain. After removing the OEM chain I took a close look at it and was surprised to notice it too was a Diamond chain. The difference was, it was a Diamond chain that was made in India.
The replacement USA Diamond chain that I removed today has lasted a total of 18,682 miles. It only needed adjusting 3 times and it is still in a good enough condition that it could easily go another 5,000 miles.
I better go out and give the new chain a workout now.