I run a Husqvarna 350, and it's a good size saw for firewood, and for what I do... however you start using these size saws above your knees or waist and they will beat you down in 30 minutes. I run a Husqvarna 51 for many years, and it was never lacking... I have run a bunch of Stihl saws and just sold a 036 pro model a month ago.. it was just to heavy for my use, it was a hoss, any of these type saws are absolute hoss, plenty of power, and last for years, and years. Like I said I prefer Husqvarna, but Stihl is just as good... lots of arguments between which is the best, but if you could change out the plastic covers on them.. give either one to a hard core every day user, tell them it's a new model (don't let the crank it tho LOL) they would both be happy customers.. They are both top tier saws, however both companies are putting a lot of junk in between the fine models to sell off the name of the many years use.
Johnsenred (spl ?) Homelite, Echo, and I'm sure I forgot some also are outstanding saws