I took a look at Creative's website (www.creative.com) and saw that they have the information on the new Audigy 4 (this, of course, skipping 3). What do you guys think? Should I save up and go after this new card or stick to my Audigy 2 ZS Plat Pro? I don't see any special differences (but I did take a short look). What makes the 4 better?