Im a McInally and therefore my clan tartan is Buchanan. It looks pretty good if you're wearing black everything else but otherwise it seems pretty nasty on the eye to me!
My mother is a Campbell and I love the Ancient Campbell tartan so I'm getting an kilt made from it... should be ready in 2 weeks.

My favourite tartan is Auld Lang Syne Modern. I just love the blend of pinky purple, blue, white and green. It's perfect. So I bought the tartan in a kilt today