Reply to Audio 6 or Audio 10?

Hi all!

So, I'm a bit confused and would really appreciate if somebody gave me some simple advice about this.

I've been DJing using CDJs for many years but I'm now interested in timecode CDs so I don't have to burn a bunch of CDs before every gig. So I want to buy a Traktor Scratch bundle, either the Audio 6 or the Audio 10.

I want to DJ using 2 CDJs with timecode for now. Later on I will probably be interested in adding a Kontrol X1 to the setup too.

So with my demands - is the Audio 6 enough?

Or to put it this way: In which case would I need the Audio 10 for example?