What's the difference between the '07 Honda TRX 450r '08 Honda TRX 450r?

Is there much of a difference? I know the '08 gas tank was reduced to 2.6 gallons and it has more customization, but I'm not sure what the difference is between the 07 and 08. I see a lot more 07's and they're cheaper but the 08's cost more and seem better. Is there any difference?

'08s cost more because they are newer.