The echo 4910/501p is a very good saw but not on par with the ms261.
I didn't really believe that myself....so recently I bought both saws. As much as I wanted the echo to be equal to or at least super close to the Stihl......it just isn't.
The Stihl has much better acceleration, and the av on the echo is nowhere near as smooth as the Stihl.
Bottom line is the Stihl way outperforms the echo.....you can make more sawdust faster with the ms261
The echo is a very good saw, that would last a person for a long time.... it's just not as impressive as the Stihl.....but it is substantially less expensive, therefore it's still a very good value, imo.