Good looking bike. My dad used to have a Yamaha and he loved it, only thing is it's a little late in the season to be trading for a bike, snow could start falling any minute lol.
I say go for it, depending on the condition of the bike. Or an even better option would be to keep the Tahoe and used it as a tow vehicle for a boat or a ski, but that is just me Horsetooth has been amazing this summer.