Back in the day I worked for an equipment rental yard and we had a couple different types of saws. The joke was "get a poulan and you'll be pullin' and pullin' and pullin'" because they would break down a lot, even when we were on top of the maintenance. The Stihl and the Husky saws were excellent, they really stood up to abuse (you'd be stunned at some of the things customers would do to them). They are certainly more expensive but in my experience you get what you pay for. If you're going to zip down a couple limbs in your backyard once or twice a year get a cheap saw. If you're going to do real work spend the money and get a good saw, you won't regret it. My $.02.
I've gone through a handful of chainsaws of various brands, and have settled on Echo as best bang for the buck. Good quality, fair price, easy to get parts and service. Just had a couple of my Echos stolen and replaced them with the new Echo 58V cordless version. It's heavy, but usual Echo quality. I have been using an Echo 58 lawnmower and blower and performance is surprisingly good. I have owned tools from Stihl and Husqvarna, and they are good tools but Echo is a much better value.
My current chainsaw is a Poulan. At first it was pretty good, but its ready for its next trip to the shop because of hard to start. One point about Poulan is that most two cycles use a 50:1 mix, but at least the Poulan I bought from Lowes uses a 40:1 mix. I end up with two gas cans, one with 50:1 and another with 40:1.
STIHL is by far the best but I couldn't justify the cost for personal use so I bought an Echo and put a carbide chain on it and I am very happy. Just finished a retaining wall out of powerpoles and made a ton of cuts with the carbide and the Echo and it held up great.
Just replaced my late 60s. (white-baby blue) craftsman/homelite which still works by the way,with a sthil 271. I went one step up from their home owner saws so I could get real bar nuts. Had a craftsman/Poulan that I bought new and only got two uses out of and left me out in the cold on a hunting trip.
Husky or Stihl if you want to work it hard and have it start back up in the spring . Winterizing properly is the only must . I got a used husky 10 years ago . I beat the snot out of it . One time I felt guilty so I put a new spark plug in it . Still ran the same. I cant speak for the new models but I will stick with mine till she is dead. She rips .