I'm undecided between a fairly basic mac pro (4GB RAM/3.0GHz/1TB etc.) or a top line iMac (4GB RAM/3.06Ghz/1TB etc.) and also whether to buy this year or next. I'll be needing a desktop to (run): -High end image editing. -Occasional video editing. -Fairly heavy multi-tasking. -Running various productivity suites and databases. -Other, more typical tasks. -To last between three and five years. I'd be happy to have the top spec iMac, which is very similar but less expensive, but I'd just like to know if there's something I'm missing, for example maybe there's a vast difference that I've overlooked or maybe a Mac Pro would be better for reason 'x'. Secondly I'd like a second opinion on the timeframe. There's no real urgency in having either now as most of the software required won't really even need to be considered until early 2009. With this information in hand, would it be better to wait until Snow Leopard and possible revisions, or again are there aspects I've overlooked? Thank you for any help. Ben.