Hi
Think my choices would be rather different.
Though wouldn't disagree about the speedy.
I'd want at least 1 JLC, and a nice alarm ( that could be one watch!) So Memovox or ultra thin.
I'd also be tempted to look at used/ pre owned. Would make it all go further.
I'd also say Β£15k still an awful lot of money to spend on watches for most people.
I suspect most non watch enthusiasts would go for a Rolex or Omega.
Cheers
JML