I have a 2010 MBP with a 2.4 GHZ Intel Core 2 Dou CPU running 4 GB of 1067 DDR3 RAM. I mostly use my MBPs for every day things like surfing the web, working in Microsoft Office, and iTunes Home Sharing. I do however, convert a lot of BR movies to MP4 though Handbrake. I determined I want to upgrade to a 2012 MBP. Although I would love the new 15" Retina one, in reality I can't afford it. I was thinking about both 13" and the 15" base models. I plan to get get a SSD and know that Apple charges a small fortune for this upgrade but, I can buy a 256 Crucial M4 for $214 or a 512 Crucial M4 for $400 on Amazon. I was also thinking when the timing was right, I could upgrade the RAM to 8GB on my own for much cheaper though Amazon. What I need help with is determining what MBP to upgrade to. What is going to get me the most bang for my buck so to speak? Obviously SSD is hands down the best way to increase read performance but, what CPU should I go with? Is dual core vs quad core a significant difference to pay nearly $500 more (base models)? Should I buy the Crucial M4 on Amazon or buy the SSD upgrade though Apple directly? From what I read upgrading the HDD is a breeze to do yourself. Thanks in advance and sorry for such a long post.