Not OP, but I like it! The piano roll interface is it's biggest weakness, but everything else is great IMO. My favorite feature is the mixer panel and effects s

Not OP, but I like it! The piano roll interface is it's biggest weakness, but everything else is great IMO. My favorite feature is the mixer panel and effects stack interface. The mixer panel is a happy medium between powerful ("I want to experiment with some ridiculous side-chaining setup") and the simple / immediate ("I just want to soften up the sound with some reverb"), and can do both well in my opinion. If you're thinking of using it on Linux, I'd recommend using something like KXStudio. (Sadly the distro version of that is no longer maintained, otherwise I'd recommend that.)