The Comfort Touch Indulgence Firm is quite firm and not very comfortable. Supports the spine fairly well and partner disturbance is OK but in terms of build quality, it is pretty basic.
The Medicoil Ultimate Contour has a spongy top layer which is fairly comfortable but the top layer feels somewhat unstable and spinal support is compromised.
The Medicoil Supreme Contour immediately feels cheap – you can feel the springs with any major movement. Partner disturbance will also be an issue here.
The Sleep Right has decent support but not particularly comfortable. Feels unsteady and partner disturbance will be an issue. Pretty cheap and nasty, maybe for the guest room.