I would suggest renting one first to get an idea of what you don't like in a helmet. Unfortunatly, there's not a lot of show rooms around that would allow you to fit and choose your helmet. Worse-case scanario, go to a motorcycle shop (like local Yamaha, Honda, etc, dealers) and try the different brands of helmets and sizing. They will not be the same as the SA20xx helmets but they at least give you an idea of how the companies differ.