I second the thread in the luxury hotel forum, it was very helpful when planning my trip.

Having stayed at PH, Andaz, and the Conrad... I will offer a contrasting opinion about the Conrad. The hard product is very nice (we got bumped up to King Deluxe Bay Suite due to lack of our booked room), but the service was lacking in comparison, even to the Andaz. We were there during cherry blossom and it felt very crowded everywhere (lobby, lounge, restaurant - we had to go to a sit in a separate restaurant for breakfast seating). In comparison, even though the Andaz/PH were pretty much at capacity, we never felt crowded or that service suffered. If you do not care so much about service, it is not bad.

As you have been in PH before, the Andaz pool is more pleasing IMO, but it now has the view blocked. The locker room/bath facilities are also smaller.

While I have not been to either personally, I would look at Hoshinoya/Aman as next properties on my list of ‘to try’.