HIGHLY recommend this tour company. They are much smaller than the companies with buses full of tourists - my group was only 4 people and thus we were able to see more of the glacier and fit into a four wheeler, which let us spend less time walking from the parking space to the glacier. We were on the glacier the entire time. The guides are lovely people who know a lot about the glaciers and care a lot about safety. Would definitely choose this company again if I go back to Iceland (and I really hope I can!)