Hi DaninNJ,
I’m happy that there were no “offending” odors with your new mattress.
The domed convolute will result in a bit of a softer hand-feel, as will the unique compression modulus of Dunlop latex, where it is softer initially and then firms up faster when moving past about 25% or so of compression, especially when taking the domed convolute into account.
Regarding “stiffness”, there will be a break in and adjustment period for any new mattress or sleeping system as the mattress loses any of it’s “false firmness” and the cover stretches and loosens a little and your body gets used to a sleeping surface that is different from what it is used to (see post #3 here). This would typically be a few weeks but it can be shorter or longer depending on the specifics of the person and the mattress. I’d give the mattress some time and see how it adjusts to you and how you adjust to it.
While both mattresses use Dunlop latex, they are different types of Dunlop (Spindle uses continuous pour) and different production processes (the Bionda uses a domed convolute on the top and bottom) and different mixes of thicknesses of layers, so “comparisons” (which would be subjective) would unfortunately only hold value if you personally were trying out each model next to the other.
Phoenix