I bought 2 of them, they look good. on my hillclimb bikes I use Renthal R-1 and change it every 2 years just to be safe, on the 1000 I use a RK DR530 that is good for something like 13,000 lbs. tensile strength. they probably don't have 5 hours of riding but I'd rather be safe than sorry.
As for sidewinder, I wouldn't have it in the Garage, the last one I purchased kinked in the like the first month, called them and of course it was something I did, so, no more sidewinders, but they do make decent sprockets.