I'm going to start with a High Elf Healer/Mage class like I did in beta, so I guess it doesn't matter. I'd do a RvR realm, but I don't think I'll be devoting the time I'd need for that to be viable (I'd need to have a group of people to level with and I'd probably fall behind). You can find a list of realms on the warhammer site under realm status, though it doesn't list types. I'm going to create my characters during lunch today.