I have and like the CS-370 but it's not really a home-run in the power to weight department. It does however have plenty of "grunt" for the cc's and very well built. I've got about a zillion hours on mine and aside from wearing out a bunch of chains and couple of bars it's been flawless. I have so much confidence in it she goes to Colorado every October with us as a camp saw, and runs flawlessly clear up at 10,000-12,000'.
I've had a couple of CS-490's and found them to be pretty "weak" for the cc's, but very well built with a lot of professional features. I even went into the upper end of the line-up and have owned two CS-670's, a CS-6700 and an 800. All of those I sent on down the road and was most disappointed by the 800. It had a "goofy" rubber plug to remove to access the mixture screws, oiled the chain all the time, and flat air filter instead of the excellent round automotive type Echo uses on a lot of their saws from that period. It was also a "turd" for power production no matter where I set the "H" speed screw. It seemed to want to be set rich and grunt in the cut, and was OK for mid-range power but nothing overly impressive. Attempts to go lean and get some RPM's out of it resulted in bogging down when you pushed it some. I could never get it to run where you'd find yourself reaching for the big/heavy saw so I sent it down the road.
The CS-670's weren't much better and wouldn't hold a candle to my 268XP so they went bye-bye too.
I jumped on the new (at that time) CS-590, then bought a CS-600P, then a CS-620PW. My brother ended up with my first CS-620 and I just got around to replacing it. Echo needs to put the 620 on steroids and build a 70-75cc saw on the same platform. It will fill in some gaps in their line-up......IMHO.......Cliff
I've had a couple of CS-490's and found them to be pretty "weak" for the cc's, but very well built with a lot of professional features. I even went into the upper end of the line-up and have owned two CS-670's, a CS-6700 and an 800. All of those I sent on down the road and was most disappointed by the 800. It had a "goofy" rubber plug to remove to access the mixture screws, oiled the chain all the time, and flat air filter instead of the excellent round automotive type Echo uses on a lot of their saws from that period. It was also a "turd" for power production no matter where I set the "H" speed screw. It seemed to want to be set rich and grunt in the cut, and was OK for mid-range power but nothing overly impressive. Attempts to go lean and get some RPM's out of it resulted in bogging down when you pushed it some. I could never get it to run where you'd find yourself reaching for the big/heavy saw so I sent it down the road.
The CS-670's weren't much better and wouldn't hold a candle to my 268XP so they went bye-bye too.
I jumped on the new (at that time) CS-590, then bought a CS-600P, then a CS-620PW. My brother ended up with my first CS-620 and I just got around to replacing it. Echo needs to put the 620 on steroids and build a 70-75cc saw on the same platform. It will fill in some gaps in their line-up......IMHO.......Cliff