Hello:
If you have enough money, don’t hesitate: Get both!. They’re not the same anyway and thus, not redundant for use in the same pedal board. If you do this, you can expand a lot the sound palette.
The DMM is more faithful to the “early U2 sound”, but also versatile for more styles while the Hazarai, despite not being analog (impossible due its extended features) is still warm-sounding and you can push it to very experimental sounds (as is the EH-tradition) and lots of sonic posibilities (looping an manipulation) apart the usual echo/delay.
If you do this, place the DMM first and the SMM/H after so you can also create patterns with the DMM and recording into SMM/H looper, or compose complex multi-delay repeats. The only flaw of the SMM/H in my opinion is that there’s no “trails” in any mode, so yo must be careful and fine when you play as the repeats cut abruptly when the effect is disengaged, instead of fading away gently.
That’s what I’d do. In fact, I have some DMM’s and the SMM/H… combine them and you’ll get fantastic results.
Good luck and make a good choice.
Regards from Spain.
Nacho