After doing some reading and research, I'm a bit confused. The postings and review say one is faster than the other, but my confusion is not knowing which they are saying is faster of the two? Is there many difference between a 06 and 08? I'm looking at buying a new bike and my local yamaha shop has a brand new 06 and also a brand new 08. Which is a better bike, if either? there's about a $500-600 price difference. Thanks.