I'm writing this from my late 2008 Macbook Pro (the first of the unibodies, the one with the battery/hard disk access door). It has a 2.53 GHz Core2Duo (Penryn), and originally came with 4 GB ram. I've since upgraded to 8 GB ram, and a 480 GB ssd. The thing is... it's still fantastic. It runs Mavericks smoothly, and really hasn't left me wanting for more performance. Granted, I mostly do a little bit of coding in python, some image work in Photoshop and ImageJ, and for heavy lifting for large bioinformatics datasets, I connect to a high-performance server. And of course, viewing media content. I'd love the battery life of a new Retina, the display looks gorgeous, and of course more speed is always nice. And the updated interfaces are really attractive - SATA2, USB2, and FW800 have actually become a bottleneck - would NOT have expected that 5 1/2 years ago! I can't justify spending $2000+ dollars on a machine that is pinned at 16GB ram. Just matching the ram and SSD storage of this machine is spendy. Is there anyone else out there who is still on old-yet-highly-functional hardware?