The Husqvarna 2100 series saws, all sound really mean at idle, and will rev and run with anything. They have the all around best sound. I have run many brands of saws, so my opinion is not just influenced by one or two brands. The number two best sounding saw would be the Mac 125. I think the Mac's are the loudest, but I think that has a lot to do with their mufflers.
Just my opinion, but anybody who has heard, and run a 2100 series knows what I am talking about. :msp_thumbup: