The Ultimate Chopper does a decent enough job, just don't expect awesome results. It basically chops food into smaller chunks, but I kept getting annoyed from the small size capacity. I especially did not like the fact that every time I tried to take out the blade, my chopped ingredients would come out as well, and spill all over the counter. For this reason, I choose to use my ultimate chopper as my ultimate coffee grinder. I've had to choose another chopper for all my cooking needs. Power This machine does seem to get a fair amount of power. It seems as though it may get too much power at times though. If you hold the power button down for too long, it almost seems to overheat and create a plastic-y type melting smell. I haven't ever seen melted plastic, because I let go of the button at this point, but makes me wonder. Safety This chopper does have a safety lock where the outer cover has to be clicked into place, before you can use the machine. I actually like this feature because my three year old tried to push the button when I wasn't ready, but because the top wasn't locked on, it didn't turn on. But over-heating may be an issue if you use it continually, as I stated in my comment above. Ease of Assembly This is a pretty easy machine to set up. You just put the cup down, insert the blade on top, and then latch on the outer cover for safety. It should be easy for most anyone. Ease of Cleaning I simply throw all the parts to the machine (aside from the base) into the dishwasher. It washes pretty easily. I usually just wipe down the base with a damp cloth. The only part I don't like is when ingredients are easily spilled while removing the blade; don't know if that's due to the small size, or how its built. Durability Seems durable enough. I've had it for a good four years or so and its still working. However, I do just use it for coffee beans now.