I also use an Arai GP-6S and have been very happy with it. I've seen the Stilo at Driving Impressions at NJMP, and it has some nifty features--built-in cooling ports and space for a communicator--but these aren't things I necessarily need right now. Do some generalized google searching on helmet fits--if I recall, when I was doing research for my helmet purchase, I read that certain brands fit certain heads better. So even though helmets come in different sizes, a certain brand might be better for you based on your head/face shape. In other words, Don Knotts should use a different brand helmet than Ted Kennedy...
