I have the hercules steel controller. (Pretty much the rmx minus the crappy soundcard and + a knob. Very good build quality for the money. You could pick one up used for around $100. I've had mine for over 2 years and it has zero slop in the faders. Good second hand buy. Only thing I don't care for is that the wheels aren't touch sensitive, but unless you plan on scratching or going crazy with the fx, this is not a big deal. Only thing is, you need the pro version of traktor to map it. I have a pretty sweet mapping with different fx combos ill be posting soon when I get finished. Or just pm me and ill send you a few different variations to play with till then.