I've just seen two hands-on videos (that are on this site, actually: http://www.macrumors.com/2015/03/09/apple-watch-hands-on-impressions/) These have told me three things: 1. I really ********** want one of these watches. 100% 2. The Sport, even the silver aluminium with the goofy coloured strap, is really ********** nice. 3. I'm really not sure about the space grey Sport any more. It's only shown fleetingly, but it looks jet black. You really don't have any strap options with space grey, but the silver aluminium might work with, say, the milanese loop, as others have suggested. It may also be easier to buy as a lot of people have said they want the space grey.