5.5 for Jr suite seems ok for me at 4Points.
My Choice:
SGS/ Méridien SURAWONG tie for first place in service.
Plaza Athenee has nice rooms but the service and club lounge have been better in the past.
Westin has the smallest lounge but the best offerings, service is consistent as well.
St. REGIS offers the best upgrades/ rooms. Breakfast was disappointing though.
I avoid ROS, W, Lm suvarnabhumi