For me it will always be the sequencer on my i30 having the ability to copy and paste a few measures or copy and paste the whole chorus.
And I still like the swing and jazz styles with the 8, 12 and sometimes 16 bar loops. Still am not impressed with 4 bar loops.
Of course half of my time gigging is playing my tenor. That makes a huge difference from just doing vocals. I comp chords in full keyboard mode and just play some right hand licks on turn arounds and such while doing vocals. I'm no pianists.
_________________________
I'm not prejudiced, I hate everybody!! Ha ha! My Sister-In-Law had this tee shirt. She was a riot!!!