Which DAC is better?

Better... they're DIFFERENT, but only your ears can really decided what is better...

Personally, I would say the MHDT Havana is better, but that's because I love the way it sounds. Non-oversampling, tube output, etc.

I don't know if I agree that "digital is moving so rapidly that anything you buy today will be obsolete tomorrow"... Computer audio (Hi-Rez) and streaming is moving along pretty quick, but except for that.. not that much is happening. And what is happening is not always for the better. Higher sample rates, more circuits, etc. doesn't necessarily make it sound better... different, yes, but not always better...

I just took a major step backwards in technology... Non-oversampling DAC based upon a chip that is really old, no op-amps, but a tube output instead... And the sound is better than I've ever heard from any digital!