I do mostly audio production work and I have 8 gb on my desktop right now and it holds up fine. I just ordered the baseline 15" retina refurb with 8gb. Are there any situations where I would want 16 gb or is it overkill in most situations? Is mavericks going to use up way more memory? I wanted to future proof this machine but getting to 16 gb is another 400 500$ dollars. Any thoughts? 8 gb enough for now and mavericks? More memory doesn't help drive the retina screen does it?