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In response to your original question, I would avoid the easy-start feature on ANY saw, given the option. These are small saws and are plenty easy to start without the assistance of some darned contraption that is bound to break at the worst possible time.
As for which model to buy, there's a fairly wide gulf between the 34cc Echo and the 45cc Husqvarna. I'm not sure that we're really talking about apples-apples here. There are lots of things to think about before the answer will be clear: What exactly do you envision this saw doing? How is it supposed to fit into your current lineup? What kind of bar length do you have in mind? What other saws are you currently running?
If you're looking for an all-around little saw, the 345 would be the most powerful of the lot. But that comes at a price: size and weight. If you're looking for a little limber-and-trimmer, the little Echo weighing in at 7.5lbs would win, hands down.
Maybe I should be looking at a Stihl as well???? Which one would be comparable for me here in a price up to $250? I will have to check ebay out for the echo as well. $187 for that shipped sounds cheap!
The comparable Stihls that span the general CC range of the three saws you're looking at would include the 170, 180, 210, 230, and 250. There's a world of difference between the capablilities of the first and last, so you'll really want to have a sense of what your purpose for the saw is before you can really pick one.
The Huskeys I know nothing about. I do have a CS 346 that I used to cut about 800 to 1000 small trees and saplings (13" dbh down to 1" dbh). Great running little saw. Easy to start and very light. ... Don't expect it to be a power house. It is a small saw. Run sharp chains (as with any saw) and it will do a good job in the small stuff. The filter is not as convenient as my Stihl to maintenance, but it still needs it every once in a while. The CS 346 is also a decent trail mainenance saw. Ebay new $187.00 shipped to my door.
Anyone who has been here for more than a short while is aware of my affection towards the little Echos. I think they're solid, reliable little machines and at eBay prices for NIB models, they're tough to beat. They do require a bit of aftermarket help to fix what the factory did wrong. I usually suggest ditching the Intenz bar for a regular bar and tensioner setup ($30 or so; you can re-sell the unused bar and chain on eBay, I got $25+shipping for the last Echo b/c I sold), and opening up the muffler a bit to let the saw breathe (or at least ditch the restrictive spark arrest screen). Once you do that you'll have a nice, perky saw for small wood and quick trimming.
In any case, figure out what you need the saw to do and don't just go rushing out after the first big sale you find at an online retailer.