Replying to ANYBODY KNOW ABOUT DIGITAL DJ CONTROLLERS ???

im looking into buying one, and my friend has the taktor s4, and told me he would have gotten the s2 if the store had it. so i initially wanted to get that but dont really feel like dropping $600 on it.

so do you guys know of a cheaper (money wise) controller that still has most of the same features as the s2? I was looking at this one:

http://www.futureshop.ca/en-CA/product/numark-numark-computer-ipod-dj-system-idj3-idj3/10150267.aspx?path=65cf9eb734a13f907aa91e66ca9311dden02

which seems to be okay, but I would like some experienced input

thanks !