I have the Stuller Solstice 4 prong on my ring....
I love it but I don''t like it with smaller stones, aka like the picture Patty posted. Otherwise to me it looks too tiny and squished, the 6 prong looks more graceful with smaller stones. But if you have a larger stone where the top of the head can kind of ''spread'' out more like with my bigger 1.6c stone (vs my 1.29c stone)...I like it much better!
My two cents. Here''s a picture and I have one more too.