Thank you for providing this interesting insight. I didn’t know any of this. I hope JPL will be able to build up the necessary in house experience again to not having to depend on contractors. Maybe in the distant future mankind will be able to actually work together on this problem space instead of being busy with corporate infighting.
As Douglas Adams put it: most people where only concerned with the movement of small green pieces of paper. The amount of small green pieces of printable paper is completely and utterly irrelevant in comparison to the next milestone mankind can achieve and must achieve to survive. (My personal, admittedly strong, opinion of course)
There are different types of mattresses, most of it is personal preference, except for making sure they are all full body so that no house guests accumulate inside. I personally prefer mem foam mix with some other material that makes the mattress just soft enough. As mentioned by others the mattress will not magically fix everything but it can greatly help not to make it worse.
So, the both have almost identical hardware? Same photo sensor? Great, anyone running graphene can get the cheaper one knowing they are not missing out on anything.