I enjoyed Red Dead Redemption more than GTA4. It was a great free roam game and one of the only blue sky experiences I had on the 360.
My four year old nephew loves the game because you can just play it by tapping the A button to ride the horse aimlessly around the desert. More games need this kind of simplicity. My mom spent a bunch of money on Skylanders for him to play and he couldn't figure it out because the game is telling you to do stuff. He hasn't touched it since x-mas. It's ironic that games intended for kids aren't actually accessible to kids because of the handholding.