Yes, I know it's an old thread. So what?
Why debate about which kind of pole saw to get? You should have both if you plan on making money at it. The pole saws will easily reach much higher than a power pruner, and the power pruners cut MUCH faster than the best manual saw can ever hope to accomplish.
... But has anybody used the Stihl arborist supplies yet? I was down at my dealer today where they had the extendable Stihl pole saw, looked really nice. ...
We have the Stihl extendable pole pruner, and I am not too crazy about it. It's nice and light, the saw is easily good enough for most any trimming job, but I still don't like it! The 3 sections are joined by locking clamps that don't hold. There are permanently locking snap pins at the end of the travel, and they also fail to hold. The snap pins at the end of the travel hold well enough to use for sawing, but this really is not a bit more convenient (on the ground) than just using sectional pole pruners.
If your groundie drops the pole pruner when you send it down from the tree, the butt hits the ground, and the snap pins strip out the hole. Oops. $275.00 tool is not as good as it used to be...
Regarding a power pruner: they are great for fast work at a bit closer to the ground than a pole pruner will reach. They are rather fatiguing to use for long periods at full extension. I would argue about the quality of the cut; they use a narrow kerf chain that cuts as clean as a 200T. Obviously, being 12' away from the cut does not make it easy to produce good work.
The Echo can be equipped with an additional 5' extension, making it much longer than the Stihl. It also can be equipped with the "Hedger" attachment, which actually works quite well on tall junipers and arborvitae.
Some simple techniques with any power pruner:
"Bottom of the branch" angled wedges are easy to produce if you are not at the limits of your reach. This can be used to swing the branch away from the operator. This is very important when you are cutting 6"-12" branches, because the operator has to make sure the branch doesn't fall on him/her.
NEVER just make a cut starting at the top unless it is a rather small branch. These pole pruners are easy to pinch, and are particularly bad about it when you are extended all the way to reach a branch. SOLUTION: make a horizontal bottom cut with the very tip of the saw, then notch both sides of the remaining wood, leaving only the top-center of the branch still holding. Finish the cut from either side, depending on which way the branch is likely to twist. You can even make open-face wedges on the very bottom of a branch using this technique, but it will leave you dodging the branch when it falls.
Poor quality cuts can be managed just like when you are up in the tree: cut further away from the trunk, then clean up the cut when there is very little weight on the remaining branch. This is
WAY easier than trying to make that many cuts in a 6" branch with a pole pruner.
"pop" cuts are super easy when you can stand well to the side of the branch and still reach it. 12' overhead? Use the full extension, stand 5-6' to the side and make an undercut, then top cut to finish. Clean, neat, and you don't need to dodge the falling branch.