I've had my Macbook 5.1 for 4 years now. I bought it in October 2008, immediately after release and I've been very happy with it. I took the cheapest variant as its the fairest deal in my opinion. After some time, I upgraded the ram from 2 x 1GB to 2 x 2GB and eventually 2 x 4GB. Moreover, the HDD was upgraded with a 320GB 7200RPM hard drive and yesterday, a 256GB Samsung hard drive was installed (the 320GB HDD is now in an optical bay). It runs really smooth now. Boots in approx. 30 seconds and works flawlessly. Although the SATA interface only handles 3gb/s while the SSD does upto 6gb/s, I bought it for future purposes should I eventually buy a new Macbook. The processor is no problem unless you intend to to heavy-duty activities, which I don't really do often. The only major drawback is battery life. I have already replaced the battery some six months ago but it just doesn't do more than 3-4 hours whereas the newer models do significantly better. I bought this machine with student discount and its serving me well. I'm about to graduate and eventually I'll replace it, but for now its perfect - after four years. That's hard to achieve with a laptop and that's also much related to the build quality of Apple machines. Just wanted to share this for those considering to buy a new machine. Look into upgrading your old machine, it can be definitely worth it and save you a lot of money.