You know if you want a do over and cut up again a bakers dozen of cookies with that 501p and since I like salt I'll be more than happy to watch. First the cold start, the warm up and last but not lest the rev up, be even better if you had a 550xp doing the same thing, even better if I could go to a saw shop and they'ed do that.
A guy I ride to work with told me today of a hardware store 25 mile away that sells both, Husqvarna and Echo, he knows the people fairly well and says they've been selling Echos to several loggers and the hardware dealer says some of the loggers prefer the Echos over Husqvarna, ouch that gotta to hurt the you know who's, so next week think I'll go there and get a closer look at both side by side. This guy I ride with has the Echo Timberwolve and loves it he also has Husky, Stihl but like the Echo the best, he also has his lawnmower work done there and he does tree trimming and lawn mowing in the summer for people.
I know bar length has an effect on balance and handling but I dont go by that, I go by where my comfort cut zone is without hitting the ground. On my bigger saw with 24" bar, I used it several time cutting limbs, and notice how hard it was for me to continual hold it up so wont run it into the ground. So I mostly use that big saw for cutting up sawmill slabs and or big trees where a longer bar is preferred, but for the average firewood and log cutting 18" bar fits my height just right.