Januari of this year I upgraded my Native Instruments Traktor S2 to a NI Traktor S3. Again this was a second hand deal, where all parties involved were happy after the deal. Sold my S2 to a student that wanted to pick-up on DJ-ing and was looking for a cheap way to start. The S3 came from a guy that got the S3 as a gift, but wanted to upgrade to S4, in order to be able to hook up his turntables. A got a very nice discount.