While I too would prefer option 1. - if you take care of your battery, you won't be left with 50% battery after 4 years. More like 80%. The rest I agree, though there is a middle ground you fail to mention - some people don't have a 4k budget for 4 years, but upgrade for around 3k and keep the computer for 4 years.
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I agree with you and it's a great choice, but I have to spoil it just a teensy bit
While 460 is technically faster than current console GPUs, games are more optimized for specific console hardware, so a console will still be able to play games better. For example, my iMac's GPU is the M290X which is a bit faster than 460 in the MBP - but I still can't play all games as well as I can on the PS4 (the latest Assassin's Creed comes to mind).
Still, that 460 seems like a really solid upgrade, don't get me wrong, and you can certainly do some nice gaming on it. I have the 455, and it handles the few games I tried with it quite nice.
[doublepost=1482819301][/doublepost]As I said, I went for the mid-tier CPU because I could only get the stock build - but I'd like to know - are there any noticeable gains to 2.6 when using CPU intensive apps like Zbrush? And what about Photoshop?
Honestly, I don't think so - but I'm curious.