I havnt used Logic for the last few versions, but it is a good program and probably wouldnt take long to get your head around if your using Cubase. A mac is well worth it, Im still running and old 800mhz(!) G4 with Pro Tools and Reason and its never let me down, even with a load of plug-ins running it takes some stick before it slows down at all. A mac is definately a good idea if your planning to do any sort of audio work.