Here’s thread that is similar to your question, but not exactly the same. It does however touch on both.
If you want a specific drum sound like a 606 or 626 or Linn or something, then definitely the digitakt. If you want to focus more on melody and synth sounds, then get the Digitone. The correct answer is “get both” because the MC series from Roland is able to do the job of both Digitakt and Digitone.
I have only a D-50 in my Roland stable and my main rig is a OT and DN (and a Wavestate). But I feel that the MC707 could reasonably cover about 75% of what I do with my E-boxes for less $$. That said, the 25% it misses is important to me and revolves around slicing and all the amazing locks of the OT and DN.
