I know the Tempest is analog, and it does sound great, but it’s only six voice and doesn’t accept samples. Six voices for drums is very limiting in my world!
You can get amazing sound from the MD, plus you can load samples if there’s something you can’t achieve through programming and layering (I often wonder if most people could even tell the difference between analog vs well crafted digital drums in a blind “taste test”). It is also 16 voice. Plus, you have the RAM and ROM machines which mean you can sample and process an external sound source. The MD also has the kick-ass Elektron sequencer, and does MIDI very will.
The MD can be used as a poly synth as well if you tweak sounds the right way, or just load some basic waveforms in as as samples.
I know there’s so much hype over being all analog these days, and that’s great if that’s your goal. But for me, when it comes to making beats, versatility wins.