Sunburst is a decent ski mound. I did a lot of my skiing here during my first couple of years because of how close it was to where I lived and of their prices. The terrain is pretty good and groomed all of the time. There is a nice variety of runs in terms of difficulty; they have everything from green to double black. Unfortunately it's a very small hill so it doesn't take much time to get from the top to the bottom and what makes it worse is how slow the lifts are. It may take ~3-5 minutes to get to the top and less than a minute to get to the bottom.
Overall it's a decent place to go skiing if you're a beginner and maybe if you're an intermediate but there are better hills in Wisconsin.