Ahhh, gotchya.
I don't know much about the 660's but some of the big bores are a bit tougher to cool. I'd be surprised if the newer ones aren't liquid cooled and have a ok electric fan.
I have trouble cutting a $10k check for a 4-wheeler too. I have been looking to add another to our house with a family that likes to ride. The 2012-2015 Yamaha grizzlily's are supposed to be really good. That's what I'm the lookout for.
