I need to buy a chainsaw so that I can cut some thick branches on my tree and to also cut up the branches that I already cut down w/ the blade on my tree pruner (man, that blade took an a** whoopin'!). Last time we had to use a chainsaw, my wife just borrowed her father's saw. I want to buy my own, so what should I look for? I don't want to get more than I need. Like I said, I only need it for cutting the bigger branches off my tree and stuff like that. I don't need some big industrial strength saw that cuts through houses or anything like that.