Reply to Serato Scratch using bridge (ableton) - whats the best controller?

i was believeing about using bridge and i just wanted some help on what controller to use.. i've got a k2 (listed for sale) which i believe its great but i cant find a control surface for it so it acts like a launchpad / apc20 thus for sale..

what alternatives are there to apc20/40 / launch pad.. the main thing i want its to be able to see the clips on the pads! everything else can be mapped to another controller..