Hello, I have in my country now this promotion to buy a rMBP. Which of the 3 options is the better considering a ratio price/profit? For 2000 I can get the rMBP with 256GB SSD, 2.3GHz and with 8gb of ram.(350 cheapest than normal) For 2280 I can get the rMBP with 256GB SSD, 2.6GHz and with 16gb of ram.(400 cheapest than normal) For 2680 I can get the rMBP with 512GB SSD, 2.6GHz and with 16gb of ram.(500 cheapest than normal) Is there somewhere a benchmark between this 3 options, to know the exact diference? I think the SSD 512GB don't worth it, because in my case I have a small HDD external USB3 with 1TB of storage. I'm not going to play very hard at it, maybe an call of duty or Football manager...but I will rip some HD videos, and work in softwares for engineering desing like Autocad and Robot.. My question is the ram memory, 8GB for the next 2 years it can be close enough but in 4 years maybe not... The differents CPU I think they don't deserve the extra cash...? Another question, the performance of the rMBP in windows environment, how it is (games and software)? So what you think?