I have the Lonsdale 363 in Dark Brown Suede, and I can say that their shape is very beautiful in person. I think it's sleeker and more elegant than 337 if that helps. Most of the pictures online do not convey this, I hesitated for a long time because I thought they looked strange. I've only seen a loafer (Sydney) on the 341, a while back to, and I think from the pictures, that while 363 is more curved, it may also be sleeker. Again, from online pictures only, I believe 363 is far sleeker than AE or Alden. Hope this helps, and it may be cheaper for you to mail order from UK than USA, but shipping cost may be a factor if you are likely to return them.
