I've got 4 Elektron boxes. Never bought the Octatrack cause when I played with it in the shop (pre-Covid) it had too much complexity and button combos for me. I knew it was past my personal threshold where the complexity gets in the way. Someone else, it may be perfect for them. I would rather have a Digitakt. Even though it is much less capable, it is more immediate and fun and I think it sounds better without effort.
I would have purchased the Digitakt to go with my other Elektron boxes except I pre-ordered the S2400 which is also an 8 voice sampler/groovebox.