Reply to DB2 with K2, X1 or PL-1?

Really having a hard time deciding. So many different options on each piece to accompany my DB2.

K2 - X-link and pages of midi (which I probably won't use)
X1 - All around great traktor controller for any mixer (no jog wheels)
PL-1 - Jog wheels and fantastic price

Anyone have any input on these devices from real world use, suggestions and recommendations?