Prefer the sportier look of the 3 door, that its quicker and I dont need the practicality of 5 doors.
The 3 door was the original version and style and angles work better than the 5 door which looks too much like an estate car, because it sort of is an estate car, it loses somethng with its shorter windows, extra windows, more door handles all taking away something away from the style of the 3 door. Losing some of the lines for the practicality.
The three door looks a little bit sportier, same with the A5, and even the concept Quattro, long door, strong rear pillar, whihc is accented by the silver window frame demonstrating the shape of the windows along with the roof line.
This is of course all IMHO etc etc. I dont dislike the 5 door, I just prefer the 3 door, which is why I bought that version.