2008? or keep mine….any major difference?

Hello all, Sorry for all the threads but you guys are my go to’s with anything ATV so thank you!

Pretty much i have a 2011 550, i love it, but am left wanting more power. So on my quest for more power i may have found a good deal. and now i need some imput.

A dealership has a 2008 fully serviced Grizzly 700. Its blue like mine, and is gonna need some tires soon, but looks like its in good shape. The quad has 1500 miles on it. He said he’d do an even trade for my wheeler and thought itd be fair to both of us….. What would i lose from my 2011 that the 2008 doesnt have…. any gains other than the power? Would it be worth it?