Beautiful TL!! You have a fine taste Sir!
Like GTO and others said 1st gen pre and post facelift is just a matter of personal preference when it comes to visual differences. A few small things like 03/04 was truly fully loaded with standard features that were slightly "shaved off" after 2005. Center console pre face lift passenger/driver slider pieces, I like that better than after facelift replaced with one solid piece. Speed cluster and gear shifter are nicer on 06+, but can be replaced/retrofitted on 03+, NAV display is nicer,
Exterior wise pretty much the same, the door rocker paneling changed to thicker chrome, front bumper got a chrome strip between fogs, different grille, rear chrome infiniti name strip above the license plate, lettering got smaller/closer together, clear tailights, trunk space difference in tonneau cover, head rests got bigger on 05+ in the front seats, intelligent key fob is a square brick changed to a nicer 'water drop' design in 05, engine cover changed too, wheel design, just what I can remember ... Other than that solid car from day one.