Ross wrote:
I liked Waid and Johns both a lot - but Waid was able to transition wally from the rude womanizer that the previous writer displayed to a mature hero you could root for, so he gets my vote.
I'd say Messner Loebs was already doing that.
The Flash series up to Waid's departure work pretty well as a character arc, from Baron's asshole to Waid's true hero. Messner Loebs provided the bridge.