I don't really pay attention to who the "best" regionals are anymore so I can't comment on whether or not PDT is a good place overall. I will say through experience that flow agreements are not worth the paper they're printed on. For example look at the situation at AA this year, furloughees are coming back so the flow is essentially stopped for the year. Recalls coupled with the removal of the domestic / international fence are going to limit the amount of pilots AA needs to hire in the short term.

The way I see it flow deals are only good for guys who bust multiple rides or get in disciplinary issues and are not hireable anywhere but their flow destination.