I have a Z1R. It's my first helmet, as I just started riding in Sept. 05. Bought it based on the testing of helmets in Motorcyclist magazine...it was one of 3 or 4 brands with the lowest impact to the head, and they tested many, many brands. The Z1R was also one of the least expensive. I don't have anything to compare to since it's my first helmet, but I have been very satisfied with the comfort and fit so far.