Hi benerlandson,
Hopefully some of the members here that own a mattress that meet your somewhat “narrow” criteria will see your post and share their comments about their mattress. There are also several mattresses in the memory foam list that is linked in the tutorial that meet your broader criteria if you include CertiPUR as one of your “acceptable” safety certifications and there may be some local options available that meet your criteria as well.
Having said that … while other people’s comments about the knowledge and service of a particular business can certainly be very helpful … I would always keep in mind that you are the only one that can feel what you feel on a mattress and I would be cautious about about using anyone else’s suggestions, experiences or reviews on a specific mattress (either positive or negative) or review sites in general as a reliable source of information or guidance about how you will feel on the same mattress or how suitable or how durable a mattress may be for you. In many if not most cases they can be more misleading than helpful because a mattress that would be a perfect choice for one person or even a larger group of people in terms of comfort, firmness, and PPP (Posture and alignment, Pressure relief, and your own Personal preferences) may be completely unsuitable for someone else to sleep on (even if they are in a similar weight range). In other words … reviews or other people’s experiences in general won’t tell you much if anything about the suitability, quality, durability, or “value” of a mattress for any particular person (see post #13 here).
Phoenix