I have a late 2009 macbook, and while I do like it a lot, I think it needs more ram. I take it a lot of places and so I often run many applications, so the stock 2Gb ram I imagine is hampering its performance. I was looking at OWC's website and they have 4Gb for $50 and 8Gb for $100. Was originally going to go for 8Gb, but now I am questioning if it is really going to help that much more compared to 4Gb. What do you guys think, is it worth the extra $50 to go ahead and get the 8?