Mac hardware configuration/purchase for animation & editing – 2013 and CS6

I do a lot of after effects work, and my job is switching me over to a Mac from pc.  (The office is mostly mac – the tech guys and everyone who chooses our fonts will be thrilled!)   They’re looking at ordering a pretty standard imac build though I’m sure they’ll go up to an i7.  I’d never have thought of not getting a mac pro, now that they’ve been updated — but am I just dating myself with that assumption?    It’s been a few years since I shopped for a machine; I’ve always worked on towers but don’t know anyone who’s used the 2012 ones. 

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