Reply to S4 for a beginner

Finally I've decided I want to learn to DJ, but apart from a good desktop and a two channel audio interface I don't have any gear, I've played around with both traktor and ableton but prefer traktors interface.

All I've done so far is make mix cd's with ableton which is quite fun and I've learnt a bit about how to make a mix but of course it's not done live.

I've looked at various mixers, midi controllers and cdj's, I don't want to spend a huge amount of cash though but I don't want to buy crap gear. The S4 seems to be perfect, cheaper than decent cdj's and a mixer but I want to start at the beginning and learn how to beatmatch.

Basically with HID platters and pitch fader on the S4 would it be any different learning to beatmatch on that compared to say a CDJ 400.