Howdy, Well I will vote for the 395XP. I have run both, but bought the 395 because of the Air injection. I have a buddy with a Stihl 066, great saw, good power, good balance, but not up to par with filtering. He cuts firewood with it, one tank of gas and is filter is packed solid under that sweatband pre-filter. I checked my 395XP after a tank and thier was 1 chip and three particals of dirt. Well not really, but the filter was clean so I ran 5 more tanks through it checking after each tank, untill I cleaned it on the 6th tank of fuel. This is just my experience with the two saws. I like them both, the 066 has nicer features, like the lateral chain tensioner, and the two-pivot point chainbrake. I choose the 395XP, and don't regret it.
