I feel better about playing with the DS4, since the top Japanese player also uses it, gonna learn!
I'll never be number one so I don't feel the need
Not only having triggers for slides, but also being able to make presets would definitely make a lot of songs easier. Same with being able to drumroll with D-Pad + Face Buttons. Technically speaking it's probably the best way to play if you're going for top scores just because it can increase your accuracy in times where those come in handy. But yeah, I'm not really going for scores all that much so I don't have the patience to learn lol.