My heart is with Windu, but my brain sides with Anakin.
He should probably stand trial first.
Here is the problem with this: Whether he is guilty or innocent, him standing trial while still a Senator will undoubtedly distract from his duties as Senator and could potentially cause conflicts of interest with those duties. The people of his state will be better served by someone who doesn’t have this cloud hanging over his head.
Also I know he admitted to being guilty in at least one case.