After reading all reviews, which can easily leave you confused, we settled on the OZITO.
What a great choice, it works like a dream and we could not be happier.
One tense moment when we pushed our luck with a larger branch, but followed instructions and the grinder reversed the branch straight out. (Need to loosen grinder adjustment first, which is not in the manual)
Highly recommended

Seriously this machine can make mince meat out of anything upto about 30-35mm and softer wood upto about 40mm. You will not go wrong at this price forget the rest, I was so close & quite happy to spend $1200. These expensive chippers are only designed for 40mm + branches and do not make suitable sized "mulch" for your gardens. The ozito grindes your excess up small enough for reuse in the garden no worries. I do 2-3 wheel barrows non stop no problem. Also has a thermo switch so you can safely use it for as long as you want without overheating the motor.

Having purchased an Ozito chain saw 6months ago (every woman needs a chain saw too!! ), a mulcher seemed a perfect partner for it. I did a fair bit of research & the Ozito came out as good value for money. It was simple to put to together, & it's design makes it easy to move around.While it's not "silent", the noise won't annoy neighbours. Green prunings do need to be left for a few days to dry out before mulching. Some thicker prunings needed to be fed through 2/3 times. Irregularlly shaped branches had to be trimmed down or they got stuck. A good mulcher for the home gardener, with an average-sized garden. This woman is pleased!

This unit would not shred properly. When I looked into the feeder I noticed that the mechanism was off-centre. Returned it and obtained a refund. I wouldn't bother again. Small shredders, in my experience, are not very useful. They take a very long time to mulch anything, block frequently and the blades blunt very quickly. That is why there are so many of them sold second-hand.
Nothing
Badly constructed, which meant it didn't work.

On the first day I used this machine, the cast aluminium plate that the blades rotate against broke in half making it useless... did I say "on the first day!!"
I carefully followed all instructions and was even limiting the max. branch size to about 25mm. I have read reviews of the Ryobi shredder that has a similar mechanism and there are several people who have had a very similar experience. It would appear that there is a problem with cheap aluminium parts not designed to do the job that the manufacturer claims.

Great unit, quiet and sturdy. Reasonable price. Does everything it claims. Works best on branches. Heavy duty but easy to maneuver on wheels. Would recommend for ppl in suburban bush land scenarios. Has helped me to take control of my backyard which opens on to natural reserve, so lots of forest matter.
Munches branches up to 40mm with ease. Auto feed is good. Munches bark, twigs and leave with ease. Good price and warranty.
Heavy. Feeder shute could be larger to make feeding easier. This is probably for safety reasons. It can get a bit blocked up with small leave and twigs but one big branch clears it out.

Just used it once. Easy to assemble and adjust. Mulch 40mm branches to 30mmx20mmx6mm pieces, although had to feed it twice. Mulched 3 months worth of prunings in our small garden in 3 hours. Reduced our prunings from 3m x 3m x 0.5m pile to 1m x 1m x 0.2m mound. We have run out of things to mulch, but the saving in time, effort and space is well worth it. Just had to sort the prunings by size and adjust the blade to suit. Quieter than a lawn mower. Plastic mouth seems durable when self feeding y-shaped branches. Only jammed 3 times on larger branches, easy fix, just go in reverse.
Clean up our garden in a few hours.
Should have a dial knob instead of allen key to adjust the blade gap, for ease of use. Allen key easy to get lost

After having a shredder that was scary to use (noisy, fast spinning blades) I found this shredder at my local Bunnings. What a difference - although not silent it is very quiet to use. It is so easy to use my wife also is now happy to shred all the garden waste. The one thing I had to get used to was the mulch is larger than with my other shredder but is still ideal for the garden. Not an expert but it works with a gear running against a plate and cuts up the branches, because of this you dont have to push things through it. I love it and wouldnt go back to the old version of shredders.
Quiet, Safe, Wheels, Warranty, Self Feeding

Excellent machine when correctly adjusted. I like the way it pulls the stuff for shredding in as it makes the job so much easier.

Does not have a holder for the allen key that is required to adjust the cutter.