We've been to all 3 (Temptation, Desire RM, Desire Pearl) and love them all. Each has wonderful attributes and we were so happy at all three.
DRM vs DP depends on whom you ask, obviously.
My take, keeping in mind that both resorts are fantastic:
DP has better pool
DP has better jacuzzi
DP has better rooms/lobby
DRM has better entertainment but,
DP entertainment staff more personal (will get to know you)
DP has less timeshare push
DRM has better food
DRM has better activities
DRM has better disco
Beach, equal (but fewer vendors/non-guests at DP)
Pool chairs, equal
I think you'll be happy no matter which you pick.
My review of Desire RM
Desire RM (Mar 24-Mar 26 2017) trip report
My review of Desire Pearl
Desire Pearl Trip Report - July 2017
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