I've totally gone REAPER for Linux. Just in the last two days I got the rest of my paid Windows VSTi's working too, so there's no looking back now! I'm building up a library of native Linux instruments and FX, but I have just about all my Windows plugins working now, and can load up projects that were done in REAPER for Windows and they play properly.
Here's a few of the Windows plugins I have working now in REAPER for Linux.
Kontakt Full Version
Komplete Elements
B4 Organ
FM7 Synth
Superior Drummer + three expansion packs
EZ-Drummer + 1 expansion pack
EZ-Keys Piano Essentials
Arturia Minimoog V
Emu Proteus VX
Sforzando
Grace Sampler
Phenome
Guitar Rig
PSP Vintage Warmer
Lexicon Pantheon Reverb
Blue Cat's Plugin Suite
Klanghelm MJUCjr Compressor
TDR Nova
Plus a boatload of other freebee Windows instruments and FX.