Well you have the money, buy it and "use" it. Go do a century with 10,000 ft of climbing wearing it, do some long hot rides during the summer. Then decide for yourself if there is a difference.

Or you could go just to the LBS and try one on for 30 seconds and decide it's no different than a $24 Wally World helmet and post your opinion on a helmet you've never owned next time the topic comes up.