My 30+ year old Echo 302s 16" is still running great, the POS Poulan "Pro" 16" I had lasted a couple years of light use, it finally quit one day and never got it to start again, they're cheap throw away saws. I don't use a chainsaw often enough anymore to warrant the ridiculous price that you have to pay to buy one that will last longer than a couple years if you are lucky...so I bought the Dewalt 60V 16" chainsaw when I was finishing up a tree removal in the yard last year. Took a while of waiting for battery charging cycles but the old Walnut tree came down with a cordless chainsaw and got cut up into rounds with the same saw too. That was a lot of heavy cutting, the saw did great, although I need a new chain now, but it did the job and now I have 2 batteries so in heavy cutting like that I can run about 45 minutes between the 2 batteries...just doing some light cutting and pruning, it'll run for about 45 minutes on one battery as opposed to the 45 minutes I was getting between 2 batteries with all the heavy cutting I had to do on another tree.
I'm not saying gas saws aren't great, but if you only use it once or twice a year chances are it may not run right or at all when you go to use it. So consider that when buying a saw, how often do you use it? What fuel are you running, is it worth the money to buy that fancy expensive saw, or just borrow one or buy electric or gas. I was looking at the MS250 but for $350 I can wait for a battery to charge and not have to deal with fuel issues due to the saw sitting for long periods of time, I may use a saw once or twice a year at the most now so I don't want to go down the gas saw road again with a tool that don't get used often. Sure the Dewalt saw wasn't cheap but all I have to supply with it is bar oil and chains, and charged batteries LOL. I'm running out of trees to cut down on the property so I don't use a saw very often and that cordless saw is just so handy to throw a battery in and bar oil and pull the trigger.