[Highland Park] Landscaper recommendations

Is there a landscaping company in the area that you have used and would recommend? I'm looking for a company to do some work on my back yard. It needs to be terraced or at least have some redistribution of earth to level the downhill slope that runs toward the house. It is a relatively small space (about 35'). In addition, I would like to add a small patio section paved with field stone. My preference is to contact several companies with local references to obtain an estimate for the work. Thanks.