As a Sibelius user and jazz musician who writes avant-garde music, I humbly disagree. Classical notation is my native language. It's an odd and idiosyncratic language, but it works. If you need musicians to understand what you've written, it's your only option. I can't read piano roll at tempo and I don't know anyone who can.
Sibelius has fairly good support for swing, shuffle and irregular meter. It has natively supported quartertones since version 6; plugins provide good support for alternative tunings and microtonal composition. Classical notation can get clumsy if you're doing really weird things, but "really weird" is a higher bar than you'd expect.
If you're using timbre as a fundamental expressive element, then a DAW is probably the right tool. At present, we have no useful system for notating synthetic timbres.
Sibelius has fairly good support for swing, shuffle and irregular meter. It has natively supported quartertones since version 6; plugins provide good support for alternative tunings and microtonal composition. Classical notation can get clumsy if you're doing really weird things, but "really weird" is a higher bar than you'd expect.
If you're using timbre as a fundamental expressive element, then a DAW is probably the right tool. At present, we have no useful system for notating synthetic timbres.