TW or anyone else, Could you compare the Wilson Tour 3 Pro bag to the Wilson Tour 4 Pro bag? I want to get a general idea of how big the bags are. Would you consider the bags to be huge (I mean to where it would be too cumbersome to take to practice everyday)? Overall, I would just like any comments about the two bags. I know this isn't the best place for this topic, but please help anyway. Thanks a lot.