I think there are some subtle changes to nearly all of them each year, with a rare change that is more than subtle, Bowtech went over the top with a new riser design last year, then some subtle changes this year. Hoyt came out with their FIRST parallel limb bow in 2006, then has sort of stagnated, Reflex (a subsidiary of Hoyt) then followed in 2007 with a parallel limber of it's own, but this year's offering have stagnated a bit. Bear bows were stagnant for a couple years, and it now looks like they are on top of the "Innovation" curve with their 2008 offerings. Are they worth $800??? Not to me, I just waited until myTrykon XL was a year old, and bought it for less than half of the retail price, with a $100 Trophy Taker rest on it, for $350. I'm frugal, some would say I border on CHEAP, but whichever you call it, I spend my money judiciously.