I bought an older used TroyBuilt Tomahawk 10hp 3" branches and wish I knew 10 years ago how useful they are and how productive. I tow mine around with my golf cart. Mine has electric start but no power provisions so it gets jumped off the GC battery. Its very safe. No way I could ever get a hand in there (I tried a few times). It has the
chipper screen so you get sawdust out of the bottom. For a few branches the chips just pile up on the bottom. But with a few yards of stuff, you need to move the rig or shovel it out. I've thought of putting it on a cart to hold more of the chipped results. I have a rule around here that any bush, tree or vine that hits me in the head gets clipped. So this year I trimmed the whole station. I didn't realize that the chips make excellant mulch that stays put, is easy on the eyes and smells good, too. I've even put it in the horse stalls to freshen them up. I thought I'd want a pto driven one, but this unit came along and I'm glad its self powered. This way, I don't have to run the tractor all over my lawn, etc. Given a clippers, a chain saw and a
chipper, your place will really change for the better to a groomed look. I use the
chipper mostly, but realize that the shredder mouth takes the vines, leaves, twigs and scrub. The shredder will even take the stuff larger than 3" but scares the heck out of people in the next county from the noise. Its easy to sharpen and the flails, belts and blades for all these things are available on eBay. Make sure you wear thick gloves when you chip. With mine the dead hardwood branches vibrate so much when they are drawing in that my hands go to sleep and they can remain that way for a few hours. Even with a brand new shave your face blade treatment.