I can see the 4 door thing being an issue for some, power is close give or take. They all seem to hold there value. For whats its worth I have both a 94 Ford 7. 3 Turbo IDI (non powerstroke) and a 94 12v CTD and like and appreciate the fact that I can work on the 6B\ISB inline 6 with-in the engine compartment. Warranties do not last forever and having the extra room \ less parts is a confidence builder or at least less intimidating IMHO. Take a look inside an engine compartment on a 1994-2005 7. 3/6. 0 ford diesel powerstroke and then the 6. 6 Duramax and then the 94-05 5. 9 cummins ISB. If you are not a do it yourselfer type this may not matter. My 7. 3 being an IDI pre powerstroke non computer controlled engine is not as bad and the post 94 powerstrokes but its still not as easy to me as the 6BT or ISB. Duramax still too new for me as is the 6. 0 international. The newer 03-05 5. 9 ISB although newer still have roots. Fact is when I replace my 12v with my 24v 2003 dropin the 12v will be replacing the 7. 3 when it finally dies.
In any case congrats, I hope it serve you well as I'm sure it will and any of the three will do the job.