Hi Gonzales,
Some comments …
Harbor Plush breakdown:
7/8" Hyper Soft: Density information missing so I would assume 1.2 or lower which is low quality/density
7/16" 1.2 / 15 S Soft: Low quality/density
1.5" 1.5 / 15 S Soft: Medium quality/density
.9" 19 ILD Talalay: High quality/density
7/8" 1.5 / 23 Topper: Medium quality/density
3.5 o 2.5 1.8 / 32 Convoluted: Bottom end of good quality/density
3.5 o 2.5 1.8 / 32 Convoluted: Bottom end of good quality/density
7/8" 1.45 / 40 Firm Base: Medium quality/density
If you listed these from top to bottom then the top layers have more than 2" of 1.5 lb or lower polyfoam in the comfort layers of a one sided mattress which means that I would tend to be very cautious because of the risk of foam softening unless you are in a low budget range (or lower weight range) where durability is not as important.
Conforma Cool 3.5 breakdown:
1 " 3.7 Lb Gel Infused Visco: Just below the guideline of 4 lbs so I would consider this to be medium quality/density
1.5 " 5.0 Lb Visco: Good quality
1 " VX13400 Transitional ViscoL: Medium quality (4 lb)
6" 1.5 / 28 F/E Core: Medium quality polyfoam but not likely to be a durability issue.
I would consider this mattress in terms of quality/density because there are no obvious weak links as long as you are not in a higher weight range (over the lower 200 lb range or so where I would start to be cautious with more than an inch of 4 lb memory foam and 1.5 lb base fo0am) and as long as it is suitable in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences).
In terms of value it would depend on what you are comparing them to and on your personal value equation.
Phoenix