Hard question! I adore Standards, especially dark ones. They're such a beautiful blue grey colour, and I love seeing the differences in the exact pattern of light and dark in their coats. I really love BVs, too, and hope to have one some day. If I breed it will just be standards and (Black and hopefully also Brown) Velvets (and inevitably Beige as well, I suppose. I do like Beiges too, especially as long as they're a nice blue-beige colour).
I do like chins where the TOV markings show up though, it can look so pretty in white chins - I've had Siamese cats my whole life, so am a complete sucker for any animal with a darker mask on the face. I especially like PWs with Beige showing through, whether TOV or not (and if they have a mask I want to take them home).
Again partly because of the dark mask, though he was a lovely chin in many ways, I was really rather taken by the Blue Slate I saw at a recent show, too (guess that would be under 'other', though they're shown in the Standard class). I was interested to learn it was dominant and that it should show up in white chins, be curious to see what that looks like.