You should go to a shop, try on the helmet you're considering. Wear it around the shop for at least 20 minutes, see if any pressure points develop. My wife once had to give away a fairly pricey Nolan that felt OK when worn for 5 minutes..... but would develop pressure points if worn longer.
2005 Suzuki V-Strom 1000 (for sale)
2003 Triumph Trophy 1200
2009 BMW F650GS (wife's)
2012 Triumph Tiger 800