waldorf attack uysed to be a favourite of mine , but now …hm the filter sounds really …bad .
If you have reaktor , you can check out an ensemble I created , It’s a microtonic clone + some extra’s ( 10 partial oscillator , sine/tanh shaper…partial pow.function .
It’s really good and popular amongst the reaktor community 
https://www.native-instruments.com/en/community/reaktor-user-library/entry/show/8341/
https://forum.renoise.com/t/reaktor-clone-tonic-microtonic-clone/43357