The DIB engine is something I've been anxiously looking forward to for a long time now. It makes productivity suites.. work. For me the biggest thing was not being able to run Sonar and many VST plugins under Wine. Now I'm waiting for them to figure out Jack audio output again, and then we get a new version of KX Studio ( http://kxstudio.sourceforge.net ) with realtime patches. Other than the GUI problems which are probably fixed by Wine 1.4, this setup gives stellar performance compared to anything you can get on Windows or OSX.