i just ordered a 339xp, 12" dime tip, 2 chains, 1/4 pitch sprocket, bearing, and a dvd and a book....
i wonder if this saw would be light/comfy enough to skirt trees...
You are gonna just LOVE that saw, dude. Or dudette... can't be sure, my wife's a carver, too.
I'm thinking of putting my 12" Oregon dime-tip on mine and running 1/4 pitch chain. You might try that setup for a while and see how it goes, but a 1/4 pitch 10-pin balanced rim sprocket is available in small spline, and that is the same size as a 3/8 7-pin rim. Give you higher chain speed and put some nastier claws on that little tigress.
The 339 may not be the perfect pruning saw, but it feels real light in the hands and has a nice, nimble feel to it. Real low vibes, too. I mean just about the smoothest feeling saw I've tried. You'll know soon enough 'cause now you own one.
For just opening up a tree for better fruit production, trimming away small sucker branches and such, my choice would be the RedMax 3200 EZ... if you can find one. I already own one, so it'd be a natural for real small stuff. It's ridiculously light for it's power, and is a saw you can use all day without ever getting tired.
Both are first-rate saws, but I always use the smallest saw that will get the job done just as quickly for another reason. No saw lasts forever. Why use up a $500 saw when you can use up a $350 saw?