Echos has great saws and power equipment in my experience. They seem to be long lasting and run well, so I can't knock them. If I were looking for a good farm/ranch/homeowner saw, I'd probably choose one.
For my needs and flavor in chainsaws, I prefer Dolmar. If you want a good strong 40+cc saw, I recommend the EA4300/421 by Makita/Dolmar. Mine serves me very well and I LOVE using that saw. Its very comfortable, weight balanced and seems to be very economical on fuel. The ergonomics feel right and it has gobs of torque for that size saw.
If you want a 50cc saw, I'd choose the PS-5105 by Dolmar. Its not much more expensive than the Makita saws you are looking at and its a pro saw. The Maruyama MCV51 (Made in Germany) is the exact same saw as the 5105 and you may find it a little cheaper (just bought one myself).
Hope this helps and let us know what you choose. Post pics......