I had a 2011MBPi5 basic and returned it. I liked it fine, just a question of timing really. My habit is multiple tabs in the browser and multiple programs open. I tend to edit video (not professionally, just a hobby) and process RAW pics. I was using iMovie and the trial of Aperture 3. I could feel the delay but it was tolerable. Besides I know that an upgrade to 8GB and later on to an SSD would be a noticeable improvement. In the meantime I plan on another 13" MBP, love the form factor, etc; just wondering if getting it in the i7 flavor is worth the $300. It'll certainly prolong the life of the laptop but the MBPs always seem to have decent resale value anyway. Will it noticeably reduce the pain and suffering of 'delay' lol? Thoughts given my usage pattern? Either way I'll be putting in 8GB RAM within a short time frame so no need to factor that in.