I have a $100 Homelite that's been in the bed of my hunting UTV for 8 years. I carry a quart of fuel, quart of bar oil, saw tool and a file. It's beat to hell but starts and cuts the occasional fallen tree blocking the trail and wood for the camp fire. If someone steals it I won't lose any sleep. If I still lived in MO and was heating with wood I'd own a decent saw.My dad was faller for 37 years and taught me a lot about saws and I use saws all the time in my line of work. Most saws will run well if you give them the maintenance they need. There are some models that stihl has produced that are crap. Research is needed on the buyers part.
I like the stihl 026 and 029 series for the occasional saw use. I personally own a 291, 362, 038AV, 2 044s and a 046 as far as stihls go.
That being said, if you don't plan on using a chainsaw every week, you don't need to be spending big bucks on something that won't be used unless you are wealthy. Find a good reputable saw shop that has consignment saws and consider buying one. You can save good money going that route.
Also, look at husqvarnas as they are good saws for the price.
Stihl vs Husqvarnas is like the Dodge vs Ford debate. People have their preferences.
One thing I didn't mention is I own a poulan pro chainsaw. Why? Well it is cheap and I don't care if it gets stolen while I'm out hunting/fishing, etc. Have had it 8 years and have gone through multiple chains and bucked a lot of trees with it. Consider going a cheap saw route if you find a good deal.