I voted for Michael Landes as my favorite. I liked Jimmy as written in S1. I know in the later seasons Deborah Joy Levine had less input and so it's possible that Justin's version was tainted for me by the fact that he was written as more of an idiot than Michael's Jimmy. S1 Jimmy was more street-wise (which was also a departure from the comics) and had a little edge to him. Besides, his Perry White imitation in 'Fly Hard' is pure comedy gold.

Lois: You know, I have a funny feeling that you didn't tell me your biggest secret.

Clark: Well, just to put your little mind at ease, Lois, you're right.
Ides of Metropolis