Hi there
I recently bought the xr1100 (posted a thread called
'first impressions of the XR1100' - have a read!).
Overall, I am well impressed with it. I've had both shoei and arai, and definitely agree they suit different head shapes - the shoei suits me perfectly. The XR is really really quiet, the visor fits brilliantly - even has a mechanism that pulls the visor tight into the rubber surround when closed to make a better fit. I have heard/ read some guys have 'noisy' shoei, I believe this is down to that mechanism being wrongly adjusted, which shoei will fix for you....
Great airflow through easy to open/ close vents. Great wide view and no misting, ever.
Anyhow - if it helps, my view would be shoei, its soooo comfy, quiet and has a great quality feel to it - but it is such a personal thing, you need to try the fit yourself - if you can get a test ride too, then that's brilliant - each rider is different, different aerodynamics, clothing, screen height blah, blah....