Reply to CDJ/Vinyl Fallback

I have recently upgraded to Traktor Pro and have a VCI-100. Have always been using Traktor, so I don't have any experience using vinyl or CDJ.

I've been believeing though that this is a serious limiting factor in terms of flexibility, plus knowing how to mix using CDJ's is handy as an emergency fallback.

To fix this I've been practising beatmatching with the VCI100 by hiding the waveform, phase and the BPM displays. But would like to actually get a pair of CDJs and a mixer, but haven't a clue which one would suit my need.

I'm looking for as low budget setup as possible, as it's just for backup, and I don't believe I'll be buying TPro Scratch any time soon. I mainly play electro, house and it's other variations and don't scratch. What would you recommend?

As far as CDJ's go I read that numark axis 9's are the way to go, but I'm afraid that if I learn on those when I get to a club it's going to be completely different. Or should I get a couple of cheap turntables and Traktor Scratch for timecode (and about the same price as a CDJ setup) and learn using that?

Thanks, and sorry if it's been asked before but search was of no help.