I went the other way. I had a Scorpion EXO-700 and went to an Aria Profile. The Scorpion is a fantastic helmet for the $150 I paid for it but no comparison to the accurate fit, better venting and lighter weight of the much more expensive Arai. The one thing Scorpion did better though is it has a better quality visor and I wish Aria would put a breath guard in their helmets so they don't fog quite as easily.
I wish Arai would go to a different visor change system. I know the method, but when I'm in a a hurry (inevitably) I'll snap a pod mounting. Probably BECAUSE I'm in a hurry, of course, but the mechanism is a bit fragile.