I'm looking to order a new Retina 27" iMac this Fall after the new ones come out... or maybe grab a refurb of the 2014 model, I dunno. In any case, I'm wondering... is the 3TB Fusion drive worth it, or should I just go ahead and get a 512 gb SSD? I've been using nothing but SSD's for the last few years, but with an external larger hard drive for storing music, photos, etc. So I'm not sure about the Fusion drive. Since it's a PITA to replace the hard drive in an iMac, I want to make the right decision the first time. 
Thanks!
Rob
Thanks!
Rob