Finally did the deed and bought the bike. I'm in total love. This decision will extend my bike life into my '80's. It is pure joy. I did note on the forum some asked why there are two sprockets on crank. After a couple hundred Kms, I have found little use for the smaller crank sprocket. Range of shifting seems more than adequate off the large front sprocket using rear gears. Perhaps in extreme trail use there might be an application, but so far it seem redundant. All in all love the bike. Looked at Treks and Specialized before purchase, but the Giant seems value laden compared to.