I still use my MacBook white - first or second gen (2,1 I think). It is a nice machine. My little hobby project

And I've always loved the white look over the brushed aluminium.
Apple recently replaced my top case for free (and it's 2007 without AppleCare so great service), I put a new matte screen in it because the original one had gone yellow and an SSD (which can't reach much of its potential due to the SATA-I bus

). But it makes it fast enough to XCode on.
Oh and I sanded off the sharp plastic edge at the front so it's way more comfortable, I used to get imprints on my wrist from the sharp edge. I also put some clear rubber pips along the top edge to hold off the lid a bit, that way there isn't too much force on the topcase so I don't think it'll reoccur. Doesn't look great that way but I don't think I'll get away with another free topcase replacement
Too bad the outside is totally scratched up, I bought it off a friend who wasn't looking after his stuff like I would. Big dent in the lid as well.
But yeah they're great machines, although having opened them up a few times now, they're not very well designed. The inside is very much "PC", not nearly as well designed as Apple's unibody stuff. I bet they were rushed out the door because they were busy enough with the intel transition. Lots of screws, little plastic parts around the hinges that fit together instead of one big part, cheapy clips around the bezel that break off. Stuff like that.
But I love it, will keep it at least until the retina 13" comes out (and then probably will keep it around as a backup, I doubt I can sell it with all the modifications I made).
Oh by the way I owned a blueberry G3 as well, got rid of it because it was too slow but it was great for lugging around, super strongly built and very comfortable ergonomics.