From what I can read from other pro users and reviews the best Piano Roll in any DAW is in FL Studio. After many trials of other DAWs including Studio One, Live, Cubase, Pro Tools, I finally bought FL Studio Signature Edition. Its a complete DAW but focused on loop production. Free upgrades for life, simplified and complete production pipeline and tones of plugins, samples and loops for EDM.
These days DAW selection is interesting. You can get
Studio One on Rent to Buy in some 20 monthly payments trough Splice.com or if you go trough Presonus Sphere you get everything they got -
complete catalog for 15 USD per month.
Notion 6 included. I tested this DAW and is right there with Pro Tools if you ask me.
Also if you hurry you can get
Cubase Pro 10.5 for the price of
Artist version if you activate it until July 28. See the offer
here. I didn't take it because they still use dongles for software verification and professional music production is really not my goal.
Here is good piano roll tutorial for FL Studio if interested:
Piano Roll
So the choice is yours. My advice is to test as many DAWs as you can and find a good
tutorial playlist for you DAW of choice on YouTube.
Here are some links to get you started:
FL Studio
Ableton Live
Studio One
Pro Tools