I'm looking to buy a chainsaw that will last me for years. For now, it will be used once or twice a year during hunting season but if our plan works out, my wife and I might buy a house with a wood burning stove where I'll need it to cut firewood to keep the house heated. I know nothing about them as I grew up in Phoenix and there wasn't a need for them. Right now I'm looking at Stihl and Husqvarna with a budget of about $500. For those that use them on a regular basis, what model, displacement and bar size would you recommend?