My daily driver is a Dell Inspiron.
My fun toy used to be my iBook running Ubuntu. (It was a bear to get it to run, but once it did... beauty)... screen's gone black, and I don't feel like fixing it yet, if ever.
I use my Dell tower as my machine graphics machine (that baby's got everything and anything I want [photoshop, Maya, Hash Animation Master, Flash MX, Fireworks-Dreamweaver, illustrator, 3DStudio Max, etc], and it double boots to Ubuntu as well for fun.)
So when it comes to computers I lean towards PC... but I am a heavy Apple user in terms of MP3 players, and phones. Nothing beats an iPod or iPhone for ease of use.