The second - I only tried free software DAWs on Linux. I've not tried proprietary DAWs on Linux, because if I'm going to do that I might as well go all-in on the Mac (not least because Macs and Windows don't have two competing sound systems that you have to switch between to use a DAW and do regular stuff like watching videos).
Windows actually does have two competing sound systems. ASIO is, even in the far future of 2020, an absolute bear. My Windows machine has an audio interface with headphones and a separate set of speakers to play stuff while Ableton or Reaper is open.
(Nobody really uses WASAPI. They should, though. It's great.)
Because Bitwig for example is amazing, and it supports Mac/Win/Linux - but I haven't used it outside windows. I'd worry about sound drivers and plugin support (I doubt plugin makers spend a lot of time on linux GUI support) but I'd trust the core functionality to be the same across all platforms.