@maggie33
DAWs currently available on Linux include Ardour, Harrison Mixbus, REAPER, Studio One, Tracktion Waveform, LMMS and Bitwig Studio.
Based on my own experience, I have mainly used Ardour and Mixbus, which share the same foundation. Both have a lot going for them, especially if you are coming from something like Pro Tools, as the overall logic and workflow feel quite familiar.
Ardour is very stable and lightweight. It is capable of handling essentially everything you would expect from a modern DAW. For some users the interface might feel a bit rough or less polished compared to something like Logic Pro, but that ultimately comes down to personal preference.
Mixbus stands out with its analog style mixer and workflow. It has a certain sound and feel that makes mixing particularly enjoyable. I consider it an excellent tool especially for mixing. It is also worth noting that while Mixbus fully supports recording and all other production tasks, it is somewhat heavier on the system compared to Ardour due to its design.
I personally use both depending on the situation. Ardour works extremely well for recording, while Mixbus often feels more natural for mixing. Editing is very well thought out in both.
I have heard a lot of good things about REAPER, especially regarding its efficiency, flexibility and lightweight nature. Many describe it as a power user DAW that can be shaped into almost anything if you are willing to invest the time to learn it properly.
Others can share their own experiences and elaborate further on how these compare to something like Cubase or other mainstream DAWs.
I could link a few tracks I have worked on, but if that might cause any negative reactions for some people, I will leave them out for now.
Finally, with RME Fireface interfaces and Ubuntu Studio, everything works together very tightly in CC mode.