Ugh. I've been using Linux since the .9 kernels/SLS distro days (1995 or so), and I've been producing albums for 13-14 years and recording longer than that, and I wouldn't even consider doing real music production in Linux. It is absolutely not worth the bullshit and the spoons. I want to be recording music, not putzing around with device drivers or scrounging for plugins that don't completely suck.
I mostly use Reaper on a Mac, and pay a monthly subscription for Plugin Alliance plugins. It's well worth the money, because it works, sounds great, and is straightforward to use. Given a choice between spending two hours improving the eq/compression/reverb of a mix and two hours trying to figure out why no sound is coming out, I know which one I prefer.