Skip Admech and go straight to Custodes?

I'm at the point in the game now where I've completed most of the elite campaigns and I want to build a dedicated raid team.

I'd always planned to just go the Admech route because they were clearly the best and I have them all, but since then Kariyan has taken the game by storm and changed the meta. And he's just way cooler than a crappy little skitarii. The only piece in missing is Trajann, but I'll certainly get him in the next pass.

What would you do?