Hi Magicdream,
If your testing has confirmed that your preference is a latex / pocket coil hybrid (and it’s not just based on theory without personal experience) then they can certainly make a great choice.
The tutorial post here also has a link to the members of the site who sell mattresses online. Two of them (Baybed and Flexus) sell latex / pocket coil mattresses that have no polyfoam in them that can ship anywhere in the country. Dreamfoam also has a lower budget pocket coil mattress that has both polyfoam and latex in the comfort layers. Baybed is a component mattress where individual layers and the pocket coils can be chosen individually and/or exchanged for different options after a purchase (it has a zip cover) and Flexus also has several firmness options but they are a “finished” mattress.
There may also be some latex / pocket coil mattresses available locally to you (there are many manufacturers who make this type of mattress) and if you let me know your city or zip code I’d be happy to let you know of any of the better options I’m aware of in your area.
I don’t keep a list of specific mattress constructions made by each manufacturer or the specific materials or components they use so I would make sure that you find out the specifics of the materials and conponents in each mattress you are considering so that they meet the criteria you are comfortable with in terms of how “green” they are (there really isn’t a clear or specific definition or consensus of what a “green” material really is).
Phoenix