Hi atv123, the Rancher you are referring to is a 55, right? A very good saw but it is more of the old generation which isn`t necessarily a bad thing. It has a magnesium crankcase with a seperate jug which the 345 does not have, and it also has more torque than the 345. Where the 345 has the advantage is that it is 1# lighter, has a side chain adjuster, and it comes form the factory with .325 pitch chain which I feel is most apropriate on saws in this range. I actually use a 345 for my 4 wheeler saw and it is a surprisingly good cutter with sharp chain, it`s nice and light, and has excellent anti-vibe, pretty fuel efficient too. My only beef with the 345 for a homeowner saw is that the chain catcher is plastic and may not stand up to many chain throws, but then how often do you throw the chain? What is your primary use going to be? Are those JD models you listed the newest models or are they possibly the older JD Homelites? If they are the JD Homelites, I`d stay away from them. If they are the newest models they would be Efcos which have a very good reputation but I do remember that many of them were a little porky for their displacement. As others have said at different times, where you can get it serviced is an important factor. As lync said, the Echos are very good saws also and it is likely that there are a few dealers somewhere near you. I know a few guys running the 4400s and they are very happy after a few years use. Although I don`t care much for some of the Echo features I believe they may have the best engine compared to the JDs and the 345.
TC165, those would be Sears, Home Depot, and Lowes models, LOL, but that doesn`t make them bad saws, just bad dealers. Russ