For me it's Stihl...

They're a bit pricey, but seem to be made as good as you can get. Parts are widely available. I'd stick with them if I was starting over today. In fact I have pretty much solely gone with Stihl 2 stroke equipment. I have 6 of their weedeaters, a backpack blower, auger head, and 4 chainsaws. I do have a Husqvarna concrete saw because it was so much cheaper brand new than a Stihl saw it was insane. It's been good so far too.