I use my second computer mainly for songwriting with Logic. Currently it's a 1.1 Mac Pro, so won't run the latest OS without trickery. Those early Mac Pros are FUN to customise. But which "good value" model to get? 1. Eight core 3.1 - plenty fast 2. Quad core 4.1 - upgradeable to 5.1 3. Other? Opinions - what would you do?