Product review (4 stars): 000 for a good induction cooktop
I bought the Rosewell about six months ago because I had been thinking about replacing my old gas stove with an induction cooktop and electric oven.  I wanted a trial before spending more than $1,000 for a good induction cooktop. The Rosewill has shown me that induction can provide some speed and safety, but it has also shown me that I am unlikely to buy another Rosewill model.
It has a difference in its "five speeds" and all, including the "warm milk" setting, bring water to a boil. Unfortunately, things like spaghetti sauce and others that I would like to simmer, boil instead.
I am not sure about the heat differences between "Stir-fry" and "Fry" either and have concluded the five settings do not offer much.
If you depend on the numerical temperature settings you will need to adjust and unless water boils at 150 degrees they are not accurate.  I have determined that temperature settings actually range from "boiling hot" to "as hot as the Rosewill can get," whatever that is.
The pot has a nice lid, but is actually more like a stainless steel tin can than something like a decent stainless steel Dutch oven.
There is a nice smooth surface on the device with a circle in the center that shows just where to put that tin can pot and that helps. The area that actually produces the heat is considerably smaller than the total space within that circle.  It is more like the size of the flame from one of the larger burners on my gas range.
All things considered, I would not rate it at more than 3 stars except that prices seem to usually be in the $60 - $80 range and with that price it seems like a decent deal and vastly cheaper than something like a Kenmore or Bosch. It's just the quite simple, "you get what you pay for" truth and that price makes it seem reasonable to rate it at 4 stars.
Its good aspects have helped me to decide that I will buy one of those that cost $2,000 or more, if I win the lottery.  Not sure about any others.