The map's in alpha, but I gotta say I really like cp_osiris. It feels pubby like dustbowl, with a more tolerable last point and not multi-stage. I'm actually a fan of how long games take, too; so much time goes into each round that victories feel incredibly more rewarding. That's means people actually work together in tf2! : O
It's a really fun battle to get each control point, and it's great how different and memorable each control point is.