I dunno bout that one. As an owner of the Pad Kontrol, i'll admit, feature wise, its great. But them pads are the major set back for me (they werent at first).
Anyway, the Akai MPD24 Boasts to have the EXACT same pads as the MPC2500, which would automatically win in the Pad department. It will have the 16 level, and Full level feature available to Redrum users, so you can 16 level drum channel 1, without effecting the other channels, and still have the wav itself get pitched throughout the different levels. You can sum up what Full leveling would do. You'll have 4 different Pad Banks to that you can work from, and switch up at your disposal.
Im really no huge fan of Sliders and knobs, because I use those on the mixer more than anything. Now the Korg Pad Kontrol has the XY Pad, Flam, Roll, and Hold Button in their favor, but I recently have obtained something that performs the same functions as Tap Tempo, and note Repeat on the MPC's, so that roll and flam wont be needed. So your just left with the XY pad, which in most cases is used to control the speed and volume of a drum.
Yea, you can tweak your drums to no end with the NNXT, but if you try a Pad Kontrol roll with the NNXT, you'll say eeewwww.
All in all, I can only give a full report when the MPD24 drops. Currently I have both the Trigger Finger, and the Pad Kontrol, and you all can easily tell who's winning that competition.