Eddis, Attolia, Sounis

I read the Dresden Files for the first time this summer and really enjoyed them (although I would second your opinion about the age range). That's one series that gets continually better the further on it goes. Jim Butcher also wrote the Codex Alera series, which I also really liked. It's a fantasy world that is sort of based off of the Roman Empire -- very different from his other work and has a totally different feel to it than Dresden, but still very good.