I use Logic Pro X.
I just started using Spark 2.
I like the sequencing system.
I'm good at programming midi notes through the midi editor in Logic, but I'd like to use the Spark 2 sequencer instead.
The hurdle I'm having is, I don't like 99.9% of the Spark drum kit sounds. I'd prefer acoustic kits and not electronic kits.
On the other hand, I love NI's DrumLab kit sounds and the ease and ability to tweak between Room/OH mics, decay, sustain, add reverb.
But, NI's DrumLab doesn't have a sequencer.