I am thinking of getting a retina MBP. I don't like it when the OS is choppy or lags or freezes, so I am wondering if the retina MBP has enough power to really be snappy. I mainly use it for: - Facebook - Twitter - Websites - e-Mail - Instant Messaging - Word Processing - Powerpoints but I also play music and movies sometimes. If I had ALL the above running, would it be able to handle it all smoothly, or do I need to max out the CPU and RAM? Would it be better to get a regular MBP and get a data doubler and do a RAID0 with 2 SSD's?