Traktor pro or scratch?

I tried to explain this but it got too complicated as I was typing so I deleted it :|  I suggest you watch a bunch of YouTube videos to learn a bit more but here are some highlights to keep in mind.

-Timecode allows you to use your CDJs to manipulate Traktor on your laptop.

-Traktor Scratch Pro 2 is what you need to use timecode.

-Traktor Pro 2 is the software alone (I believe) which can be used with external MIDI controllers.

-If your mixer is not "Traktor Certified" then you will need an external, compatible sound card that will allow you to use this setup.

-The X1 is a Midi controller (no sound card) which allows you to control Traktor (or any other DJ software) on your laptop.  The one reason why it may not be a one stop shop would be mainly due to the fact that it is for deck control without a jog wheel. so all you have is play cue loop etc. controls. No mixer control.

Feel free to ask any more questions after you do some research and I will try to help you out.

Ended up buying traktor pro 2 as I was told I could use the cdj 350 and djm 350 in HID mode and that I only needed traktor scratch pro if I wanted to use either turntables or a Cdj that's not capable of HID. I also figured out that as both the Cdj 350s have sound cards I wouldn't need an external audio interface but I would only be able to use 2 decks on traktor which is all I needed anyway. Think this is all correct, will find out when my usb cables arrive along with my x1

Cool, glad it worked out for you.  The HID method is so much more superior than the time code so you will definitely enjoy it.  Have fun!