For me? Elektron sequencers. Why? Conditional trigs. I don’t care for trig probability but the ability to program X:X conditions, PRE, NEI, 1ST, is huge. You can get complex without faffing about with probability and hopping the RNG gods do nice things…or not.
I don’t sequence chords or need to have chords with certain notes longer than others per step. You ‘could’ do that sort of thing with multiple tracks but it’s not what I need for my style.
Elektron sequencers are the best for me 
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