From what I have heard from the owners of these saws they are the one of the best saws made of their class these days, built well and simple to work on if need be.
The Echo 590 is probably the least spectacular when compared to any pro 60cc saw available new today (and LOTS of old ones too)I hope you have a saw that works at the end of the warranty. Take a look @ the exhaust outlet on the muffler, and tell me its not a recipe for complete failure. Its like 1\20th of the size of the exhaust port. Never could get what people get so thrilled about them for other than price. Might as well gamble on a holzfforma or some China saw, imo. They aren't a bad saw if you gut the muffler and turn up the fuel. That being said a 562 can kick its butt 11 times out of 10.
however, when compared to the modern "farm" saws (the class Echo themselves puts it in, btw) it is probably the most spectacular
just keeping it real.