So there was this open box return 13" Retina Macbook Pro at Best Buy. Perfect condition, not a scratch on it. It has the 2.5 Ghz i5 with 8gb RAM, 128gb HD. I was considering getting the new $1299 13" retina but was concerned about only having 4gb RAM. I knew after upgrading a mid-2102 15" rMBP to Mavericks that it completely smoothed out the jerkiness of Mountain Lion Safari and overall made the computer a bit snappier. So I thought, well, they want $950 for this late 2012 model that I can upgrade to Mavericks, it will have the 8gb of RAM, so I save another $200 there.....I'll give it a try. So far, I gotta say man, I'm pretty glad I took it. I wouldn't mind doing a side by side comparison (I do not see too many on YouTube even), but with my brief time with it, I'm glad I saved a considerable amount and went this route. Anyone else try the same thing?