One saw will never cut it. More than likely you will get "pinched" or hit something and dull the chain on most outings. Instead of wasting precious time trying to free the bar when you get one stuck, grab the back up saw and cut her free in seconds. Waste a chain, no problem, grab the back-up saw and keep cutting, mess around with changing chains between outings.
If all you are doing is cutting firewood for home heating, small stuff less than 18", you can get two medium size Echo saws, a good splitting maul, and a log lift and still make the budget.
Although there is nothing overly impressive about any of Echo saws we own/use, they start with one or two pulls, run flawlessly, VERY thrifty on fuel, and never, ever, give us any troubles anyplace requiring anything other than "normal" maintenence.
Even being a tried and true Husqvarna fan, there is not need to spend a lot of money on high end Husqvarna's, or even the better Stihl saws, just to cut small stuff for home heating......Cliff