I ended up selling my entry-level rMBP because as it turned out I needed more RAM and - above all - a bigger SSD. Because the only rMBP with 16gb of memory they had at the Apple Store was the top of the line version (2.7ghz, 768gb SSD, 16gb RAM), I ended up getting that one, although I'll have to sell my iPad to make up for the price difference. Anyway - I was among those who kept saying that 8gb are enough for the rMBP. Boy was I wrong. My first one was slow as heck. Scrolling was choppy, even normal file operations were slow. The new one is lightning fast. The difference is absolutely massive. I had the two side by side today when I transferred my stuff over - I couldn't believe those are even in the same model range. If you can afford it, go for the 16gb version, it's REALLY worth it. PS: both had flawless LG screens, btw.