Got the saw yesterday and ran it for awhile last night.
All I can say is WOW. This thing cuts through logs like a hot knife through butter.
A 20" cherry or maple is cut completely through in approx 12 seconds. A little 10" tree takes about 4 seconds if you take your time.
Absolutely no vibration or strain on the body, other than the 13# weight which actually isn't bad if your mind is into it and your 50+ year old body is thinking more about the 100# chunks of wood you now have to deal with.
It is going to take a little time to figure out cold starting. I even saw this in the reviews but it goes from choking needed to flooded pretty quickly.