Reply to Beginner's Question: What controller should i choose?

Hello,

my Name is Sebastian, I'm 23 years old and from Germany. So my english is not the best, hope you understand most of my text

On New Year's Eve I got the chance to perform first time ever on some Traktor 1 Scratch with Technics 1210 MK2 and I liked it a lot. I've never stood on the decks, just playing around with mouse and keyboard of my laptop before.
But there was a friend of mine who is playing at some evening clubs and he liked what I did So i will have the chance to play as a warmup in a club soon. Practising is very hard at the moment, because I have to go to the flat of my friend.

This is why i wanna buy some controller for practising at home. It should not be expensive, dont know where djing is going to (getting serious or staying fun). So Kontrol S4 and everything around is too expensive

I got Tracktor 2 LE already from a friend who's bought the PRO Version.

I have different options:
- VCI-100 black 280 bucks
- VCI-100 MK2 silver 310 bucks
- VMS4.1 340 bucks
- Mixtrack Pro 200 bucks
- S2 480 bucks

What would you recommend? I dont wanna play with it at clubs and have some active speakers at home, so do i need an extern soundcard for the vci-100? Is the MK2 worth the 30 bucks?