The stock cooler has 150k miles on it - TEP specifically recommended either a new radiator or a/m cooler (for use with my 'new' trans). It sounds to me like pretty much whatever will suffice.

I'm just going to see about finding a cheapie aftermarket unit (ala the Hayden I linked). I don't want to bother with a new radiator as mine works fine and I don't want to mess with bleeding etc (not to mention the A/M cooler is way cheaper).