Probably another Toller. I know, I'm boring, but I can't stay away from them! I thought I'd be content once I got Spring.. but everytime I hear of another Toller available or see cute puppy pictures, I want another one haha. My next one should have lots of white though, since I already have one with a medium amount, and one with a minimal amount. And male or female doesn't matter anymore.
A female Border Collie would be great, too! A red/white smooth, or a red/white or black/white medium coat.
If not for the fact that Keira's being a major pest today, I'd also say I want another Doberman. A red girl.