Well, the Mac mini update was sure disappointing, so I'm pretty much back to considering a 21.5" iMac to replace my 2009 model (which has been, by far, the best Mac I've ever had). Although I lust after the Retina 5K model, I just can't fit it on my desk right now. And so I'm trying to figure out how to spec my new machine. I'll be getting the fusion drive for sure, but everything else is up for grabs. My usage is general and not very demanding, and would be well satisfied with 8 GB and the 2.7 GHz i5, *but* I really want to allow for the possibility of doing some hobbyist recording with Logic Pro X. My guess is the 2.7 GHz model with 8 GB would even be fine for that. But I am still lured by the maxed-out 3.1 GHz i7 model with 16 GB, which I figure would take as far as I wanted to go for at least a couple years more. Are there any hidden limitations on that machine that would make it an unwise investment? I'm not looking to game with it, so GPU performance is not that important. I'd imagine that storage is the first limit I'd hit, but that is the one thing I can effectively expand externally as needed. It is the prospect of a Retina 21.5" iMac coming in another year or so that makes me hesitate to commit to a machine for longer term. Anyone have any thoughts? I know I haven't even formed a coherent question here, but I'm just trying to clarify my thinking before plunking down $2K+ on a maxed-out machine.