Hi 1fastvx,
You can see some of my thoughts about the OMF Serenity latex mattress (and some comparisons with some of the Brooklyn Bedding mattresses including the Total Latex Mattress) in post #2 here and post #2 here and post #3 here.
Yes … they are good quality mattresses and I would choose them over most mainstream mattresses in a similar budget range but as you know there are also other similar component latex mattresses available that use the same or similar materials and layers in lower budget ranges.
They are one of the members of this site which means I think highly of them yes and they compete well with the best in the industry. I certainly wouldn’t hesitate to purchase any of their mattresses that I thought was suitable for me in terms of PPP and the parts of my personal value equation that were most important to me.
Of course when you can’t test a mattress in person them it’s also important to have a more detailed conversation with any online retailer or manufacturer so you can choose the layer and firmness options that have the highest chance of success (see mattress firmness/comfort levels in post #2 here).
Phoenix