Hi burghs,
Yes they are a member here and since you are as well (you’ve made a post on the forum) it would entitle you to the bonus they offer to the forum members which is a free shredded latex pillow. Just let them know your username here.
I think your other questions about the mattress are answered in post #9 here :).
There is no memory foam in the mattress. From the top down the quilting layer is polyfoam, then comes the latex, then there is a high quality polyfoam support core.
This is the type of feedback (along with your body type and sleeping positions as well as the results of any local testing you have done) which will help them to help you make the best possible choice. They know every detail of their mattress and the manufacturer of a mattress is always in the best position to provide the most “accurate” guidelines because they have a customer base that can use as reference points and have much more detailed knowledge about how every layer of their mattresses interact together and with different people.
You can also reach them on the phone (their contact information is at the bottom of this page).
Hope this helps.
Phoenix