I used to really like Sonic Adventure. Also I would argue that the old 2D sonic games have the exact same issues that they complained about in SA. Jeff mentioned pressing up all the time, in the old Sonic it's pressing right all the time. Old Sonic games also have the bit where you have no control (like when Sonic is flying around in those tubes in Sonic 2 which is Sonic 2's killer whale moment). However Sonic 2 doesn't have Big the Cat and Sonic and Tails doesn't speak so it still wins on that, but gameplaywise I think that SA is very much like old Sonic except 3D.