Welcome. Nice collection you've got there already. One of each brand is not the way I've gone myself but it's a good strategy. If you've got to have just one Tag Heuer it should definitely be the Autavia re-issue (and not just because I'm trying to build it up before selling mine!).
I agree about the Urwerk incidentally. Gorgeous but impractial to wear. Not that that's a problem as the chance of me actually owning one is zero.
Dave