its Fl studio, i’m using it as VSTi inside cubase, and sending midi from it to Cubase instruments. FL Studio Piano roll is Super Fast and creative, Cubase also have very strong and powerfull features, but in FL Studio Piano roll, have couple of small things that makes it more usefull in simple things (just make melody or chords…)
I aso believe Steinberg will add this function to Cubase.