Switching to the pre 2008 cable makes the steering WAYYYY better. The 2008+ has almost no steering throw and makes the ski turn lazy at low speed. Swapping the steering cable (and pole or modifying the pole mount) should be the first mod to any 08+.
The 96-07 turns better with front sponsons but will never be as good as the 08+. There is more going on than just front sponsons, it has deeper chines, the pump is set back and the rear of the hull is more narrow.
I found the 2008 hull to be significantly more stable and predictable at speed than the previous. The harder you push it, the better it rides and like @freshfit said, it is a bit sensitive to body position, too much nose pressure can make it move around a bit in a straight line.