MacBook Pro, I got my first one 4 years ago, and so did a few of my friends. Some bought expensive toshiba laptops (2,500 - 3,000), others got decent HP and acer's for (1,500 - 2,000) Both theirs broke within the first two years and even after being refurbished are too slow to be used nowadays. Mine lasted for a full 4 years still running the latest photoshop and even movie editing every now and then.
Now I just reformatted it and gave it to my parents, it still handles the basics and got myself a new macbook pro.

The prices are a little bit extra but not much, the software is great, and it's by far the best designed laptop on the market.

ps. Regarding the post above about upgrading macs. You can upgrade your mac yourself if you have the right size screwdriver. Go ahead and buy the stuff off of neweggs and install it. If you can take apart a normal windows laptop you can take apart a mac.