Hi Hammer,
My advice in this situation would be to again follow the steps outlined in the mattress shopping tutorial here that I linked to quite some time ago.
With all of your feedback, it may be that you prefer something using a bit of latex (for durability) along with the addition of some memory foam (for motion transfer minimization). You also may wish to investigate a more “traditional” mattress using springs (pocketed springs can be assistive in minimizing motion transfer) and higher quality poly foam. If you do choose something using latex, based upon your previous comments, you probably would be best served not going with a complete latex mattress but one that uses other materials as well to address you preference for motion transfer and some of your wife’s previous comfort comments as well.
Other than that, I can certainly offer up some comments upon products you may be considering (how they might perform based upon your pervious comments and experiences), but I wouldn’t be able to make any specific suggestions for you.
(BTW, I was reading through your old thread and you may wish to place another edit on your post #9 here regarding the overall status of your dealings with Flexus, as it can be confusing for someone reading through everything.)
Phoenix