Since starting this thread I've stayed at Conrad Maldives and have to say it's epic Hard to compare it to the others (at least that I've stayed at).

Here's my order:

1) Maldives
GAP
2) St James (London)
3) New York
4) Dubai
5) Hong Kong
T5) Bangkok
7) Miami

Next Feb I'll be in Asia so trying the Tokyo, Osaka and Seoul hotels ^