You might be very happy with an Echo cs400. Smooth, easy to pull recoil, light weight with ample power for what it's intended. They say a muffler mod wakes them quite a bit. I, ve only run stock and been satisfied for my purposes cutting smaller then 10inch diameter. Like it in the bucket truck when blocking up high cause it starts easy and is smallish. Saw a few new $300ish New on eBay recently. They sell fairly strong used from what i seen usually also.
On the ground I usually prefer my muffler modded 025 for it's power and geometry. Seems to keep my back a little straighter and reach farther. Starts good but takes a fairly stout pull.