Got mine today, woohooo!
Took it out to work after lunch, and I like it!
It sounds better than a 346, a bit darker, a little more grumble.
Feels better than a 346, slightly narrower and the stop/go button/lever feels a lot more solid. It has a different action as well. Pull out and up puts the choke on, down again for fast idle.
A really nice feature (well I like it anyway) is that the stop position is on a spring. So you stop the saw by pushing the lever down, and it comes back up ready for more straight away. I find the 346 a little awkward with thick (hedging) gloves on to flick the lever back up to go, big improvement.
It has captive bar nuts, clever idea, wonder how they came up with that?
The chain tensioner is all in the clutch cover which makes it easier to put a chain/bar on.
It has a little window in the fuel tank to check the level.
It revs a little higher than the 346.
It seems to be finished slightly better, my 346 came with (slight but noticeably) different colour bits of plastic, unnecessary imperfections imo.
But...
It only comes as an "autotune" which may or may not be great. I felt it was idling a little slow but there is sweet fa I can do about it?
I'd have also liked to set it slightly rich to run it in.
It did run right proper on Aspen straight away though, no adjustment needed.
The purge bulb is a little more sunk in the cover and the edges of the plastic surrounding it are quite sharp, easily fixed with the file though.
I did buy it to have less need for spares, being the same engine size etc as the 346 I thought it would be ok, but airfilter and spark plug are different so only bar and chain are interchangeable.
It still likes to fall over like the 346.
Overall it's a really nice bit of kit and a great performer right out of the box! It feels great, sounds great, cuts as well as the 346 so may get a bit better with time?