I'm waiting to replace my 2009 C2D, which is getting a tad slow but still useful so I don't have any rush. No way I would get a 13" after being used to the 15" screen all these years. Those 2 inches make a big difference
- If your eyes can handle it, you can actually get more screen real estate on the current 13" models than you have on your 15".
I am replacing my 2009 iMac hopefully with a 15 inch MBP but not sure if I should wait for a refresh or buy now. The cheapest I have found the base 15inch model is 1799.