Both of these mattresses looks like a good choice. But I haven't been able to find any information about the Flexus Comfort Quadra-Flex pocket coil. How do these compare?
The spring unit looks very similar to the
QuadCoil produced by Texas Pocket Springs
, which would be a good quality and durable spring unit, but I don't know if TPS produces this for Flexus or not. Many manufacturers consider information about their suppliers as proprietary. Did you phone Flexus directly to inquire about the spring unit? That would be your best course of action.