I'm 6'5" and found the London navy was excellent for me. It is slim but not overly so and the buttoning point is flattering for a taller person (just above my belly button). I did not like the Napoli as the buttoning point was very high and did not work for my body type. The sleeves on a 40L are more or less perfect for me (35-36" dress shirt sleeve typically).
2/10/14 at 4:30pm