I have a lamb A-2 in black. Love it. Brown is classic and is a nice color away from the monochrome thing. But..for me the black works better and goes with most of my clothes and shoes. Also, the black seems more chic to me (esp with the shearling collar). That said, one change I would have made is to go with goat for this particular design.
Thanks for the insight. Why goat over lamb?