I've been plodding along with my old G5 Dual 2.0 for a long time, but I can't put off the upgrade any longer. I've been reading some of the issues people are having with both memory and CPU distribution, which have made me wonder whether I really need an 8-Core. I use Logic for composing and arranging, making sometimes heavy use of EXS, Kontakt, Vienna Instruments, East-West Play libraries and a number of other VI's, so I need a powerful system for sample streamingâ€”but while I do record sometimes 12 or more audio tracks alongside the VI's, I don't do any final mixes in Logic and therefore don't need the extra CPU power if it won't noticeably improve my MIDI-based work. Will I regret going for the Quad? Is it possible the faster processors of a single Quad will benefit me more than the slower processors of an entry-level 8-Core? Any advice appreciated.