I think it really depends on the property. My own opinion from the properties I'm familiar with is as follows:
HHV/Lagoon: Plus is worth it because it is the higher floors, therefore an improved view of the ocean (and less ground noise from the Paradise Pool). Premier rocks because its ocean-front.
HHV/Kalia: Plus is worth it because it is on the Ocean Side and has good (if far) view of the ocean. Standard is City-View (which is still nice)
HHV/Grand Waikikian: I don't care for either 1BR or 1BR Plus because they are predominantly on the Street Side (and its a busy street). 1BR Premier is high floors and on the Diamond Head side, but its a ton of points. I think 2BR Standard is a "good value" (relatively speaking considering the overall high points for GW) because a number of the units are still on the Diamond Head side and have Peak-A-Boo views of the Ocean (per a thread in here). It's hard to get excited about the 2BR Plus/Premier at GW because the point requirements are so high.
Kings Land: My preference is the Standard units, and not because of the lower points, but because it is ground floor. For this property, because of the non-ocean view, I don't see the value of the Plus or Premier designations and being on second or third floor. I would be happy with either the 7,000 or 10,500 Standard rooms, and would be a little disappointed to get the Plus units (can't be too disappointed because its Hawaii). I would rather have a 10,500 Standard Room in Phase 1 than an 8,400 Plus Room in Phase 2 -- because of the ground floor, greater living area and nice porch.
I hope that helps!
Best,
Greg