Do any of you use a GPS for golf and which do you think are the best?

I am doing some research on GPS and was wondering if anybody can tell me which they think are the best models and why. What do you like about them and what do you dislike?
Any help would be appreciated.

I do not use a gps but I had heard that the igolf neo is passing up sky caddie. the neo is cheaper,smaller, and lighter. Also when you subscribe for all your courses, you can keep all the courses that you download if you decide not keep on paying for your subscription with the i golf neo. As for the sky caddie you will lose all your downloaded courses. which I think that is weak……..So I heard.