I'm really not trying to start a flame war or be a troll but I had a legit question for those of you who use CDJs with Traktor. (A friend mentioned he might buy used CDJs and use them with Traktor.) Why not just use the software built into CDJs to do everything? If you like Traktor more, then why use CDJs, since at that point they are just expensive controllers? Is it because they are the club standard? (At least that I've seen.) But when you are at a club, are you still bringing your laptop to use their CDJs? Is it the external screens so you are not looking at the laptop? (Which is why I liked my S5 when I used it.) Or is there is there some extra benefit using the two together?