Yes. The 2003 game allowed higher resolution textures for the course designer, so the courses look incredibly better. It also added the Real Time Swing, which ties your swing action to the mouse movement for more realistic gameplay. There are a number of other changes, and more still to come, as a few of the users are working on some updates for the game. A couple of years ago a user designed patch fixed some bugs that Microsoft chose to ignore, and now the same group is working on some other additions to the game. I am loosely associated with that group, and will likely get to do some beta testing of the new changes.
For me, there is no comparison... Links 2003 is head and shoulders above 2001.
