Mee-la but I speak French so tend to go to that pronunciation. (said Pree-mark for years!)
Lol, me too! Most of the world is probably on our side though.
I think the Myla spelling/pronunciation (rhymes with tiler) is potentially unfortunate because it's an underwear brand.
I might have used the names Laura or Claudia but I find the English pronunciation less appealing than the Italian, and it would be annoying to correct people all the time. Don't get me started on Aurora pronounced Orora: it's not that it's wrong if you're English, but it does sound really awkward.