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...Until a version of OS X comes out that supports that generation of Mac but requires a minimum of 8GB...

Not being able to run the latest version of OS X isn't a problem, but it's only a matter of time before you're two behind and at that point, you stop being able to receive updates to basic things like Safari and Adobe Flash Player. Being able to run the latest version of OS X forestalls that. Apple has been, with the exception of Mountain Lion, been doubling the minimum RAM requirement from 10.3 through 10.7. It's safe to say that, especially with Mountain Lion abandoning the 32-bit kernel, they wil up the RAM requirement again soon. So yeah, future proofing, it's a real consideration.

I doubt there will be OSX upgrades that will require 8GB's of RAM minimum in the period the OP is going to use the computer. 8GB's of RAM is just like insurance in this case.
 
I am Glad your look at refurbs

I am glad your looking a refurbs

got my 13" MBA 2012 i7, 256GB 8Gb for $1450

The 13" i7, 512GB, 8GB refurb is $1870 but I guess after taxes your right it's $2000

While the one with 4GB is less money 8GB really is worth it since the ram helps with the Intel 4000 and if you plan to have the computer for 2-3 years it will help down the road.

So do you need the absolute maxed out MBA with 512? I didn't think I did and got the refurb 256GB and I think I actually got the last one off the refurb site because after I ordered they took down the option I bought

I would wait until a i7, 256GB, 8GB comes along the refurb website

the the premium to go to 512GB is too much but 8GB is def worth it
 
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