Yep. Same here. I think I want both though.
How I want to use them:
MPC = My main DAW in a box (multitracker for my synths, guitar, and bass; vocals); looper for guitar, bass and synths; practice tool for playing guitar and analyzing my timing; finger drumming; straightforward and powerful external sequencer with multiple midi ports (audio from external gear being sequenced will be run back in for recording); loads of sampling time so perfect for vocals or long samples; polyphonic chromatic sampling (chords)
Digitakt = creative and simple sampler for manipulating audio in ways that the MPC doesn’t lend it to; quick step style drum sequencing and pattern creation with little menu diving (so perfect for getting ideas for tracks going); sequencer for external gear in a way that the MPC doesn’t lend itself to (trigs, probability, parameter locks, etc).
Edit: I think both are going to be classics.