So I made a mage and I'm wondering, should I go with fire, arcane, or frost?

I looked at TenTon Hammer of course, but they don't really go too into detail, and all the forums I look at are so opinionated.

I am not looking for a good PVP build. I plan on respecing so I can PVP later on, but right now I'd rather just do dungeons and whatnot until I get up to 40.

So can anyone give me some opinions on this? Pros/Cons list work as well. I go on forums and I see a LOT of inconsistencies...like some people say fire is better and others say to go with frost.