No real Dolly dealers around here, so I never got into them. I once started conversations about becoming a Dolmar dealer with the western distributor in southern Oregon, if/when I bought a Stihl/Husky saw shop there. Fortunately for me, I was talked out of it by Lakeside Andy and several other Dolmar dealers in the western US.
Lots of good saws on this list. They all have their plusses and minuses. Ported right, they all become mean machines. Here are the vibes for the 460, 440, 461 and 441 as posted by Stihl in the UK. Big difference in the buzz factor, left/right (front and rear handle) vibration in m/s*s (meters per second squared).
460: 4.2/6.0
440: 4.2/4.5
461: 4.0/3.8
441: 3.1/3.3
Note the big difference in the 460 left and right. Running a higher vibe saw definitely wipes me out a lot more and faster than a less vibration prone saw. I may swap my 441 for a 461 though. Same weight, more power, & better AV than a 440.