Hi gskinner,
As you mentioned they are quite new and I don’t think there has been anyone that has mentioned buying from them yet or provided feedback although there are some that are considering it and they are well worth talking to.
In terms of quality … a mattress is only as good as the quality of the construction, components, and materials inside it regardless of the name on the label of the mattress and latex is a high quality material compared to other types of foam regardless of the type of latex. Of course 100% synthetic latex is less costly than 100% natural latex (they offer both in toppers and 100% natural in their mattresses).
You can see some of my thoughts about them in post #6 here and in post #2 here.
Phoenix