The beta drivers work great. Have no fear... Just update your OS, install the new drivers, and enjoy seamless, delicious audio. I've used several versions of the beta drivers and haven't had glitch one. While certainly not in the "upper pro audio world," I do make a living with my gear and have friends who score network and cable TV series. I've done every OS and drive update, knowing that if there is a problem, I can Time Machine my way back in 15 seconds. I don't know that Mavericks is "commonly agreed" to be problematic anywhere. Run a clean system, don't clutter it up with a bunch of third pray drivers and junkware, and Mavericks works great. I should also point out that my studio computer runs my DAW and VI's, my billing software, and is Internet connected. Zero problems. A second machine would be a massive waste... there's no reason why you can't run accounting or word processing software on a studio computer. I'm not busting your chops, but you do present your statements with an absolutism that doesn't fit. A lot of conventional wisdom doesn't hold up beyond the Webz. My experience tells me that most of the kvetching that goes on in various audio or DAW specific fora is the result of people insisting on using obsolete third party drivers for input devices ("But I can't work without it!"), goofy and unnecessary methods of passing audio or MIDI between programs, etc. When (that is to say IF) the root cause is ever discovered, it almost never has anything to do with the OS or DAW, but is either junkware or operator error.