of the ones I have visited, in order from best to worst:
Amanbagh (Rajasthan)
Amansara (Siem Reap)
Amanruya (Bodrum)
Aman New Delhi (RIP)
Amanjena (Marrakech)
Amandari (Bali)
Amanusa (Bali)
Aman Summer Palace (Beijing)
Visiting Aman Sveti Stefan in July, and have tentative plans to visit Amantaka and Amanpulo in Oct/Nov