I just bought a Shoei TZR, black, due to the price wasn’t going to spend an extra hundred for silver or more for multi colours. However I tried the HJC and the gmax, and neither of the fit well. I had to buy an XS. From what other riders have told me and what the guys who helped me get the helmet all said the same thing, fit and comfor are the two main things, then wind noise fog and such. You can always buy things to help with the fog or so I’m told. For me it was worth the $280 (can) to protect my noggin, knowing that it fits well. I have yet to get my bike, so to get used to the helmet I ocassionally watch tv with it on like the people above have suggested.
Hope that helps.