This unit is very powerful. Just as soon as you turn it on, get ready to turn it off.
I give this model top marks in all categories but one. Unfortunately I don't think the entire industry is ready for the next step.
This unit is listed as compact. I would not come close to describing it as such. Too me the diameter and height do not reflect the state of technology today. I don't know how much the cost would increase to implement more compact and powerful technology, but I would have seriously considered it at the time of purchase. For me space under the sink is a big deal.
I have a sink with a square drain. That manufacture makes a drain that will work with a garbage disposal. Plumbing today is pretty standard. Unless your a dealing with a no name sink manufacture you should not have any issues.