If you can get a good '10 go for it. They had 275mm suspension compared to 250mm of '12 and later. '12-'13 got 690cc engine vs 650, slightly better seat and headlight. And thats about all i know off.
I see you have a DR 650. I went from one to a 690 and have not looked back for one second. Take the DR and multiple everything by at least 2. Horsepower, suspension, brakes, chassis.
I like the DR, but the 690 is just so much better✊✊✊