Hi Osahar,
It certainly looks like you’ve done your homework and the mattresses on your final list are all good quality/value choices and you are comparing between “good and good”. There are a few specs missing from your descriptions (and the Tempurpedic specs may not be exactly accurate because they could have changed since they were making their specs more publicly available) but these are all in the base layers and are easily available from the other manufacturers in your conversations with them. None of the “missing” specs would have a significant effect on quality or durability (they will all be good quality materials).
Now comes the most difficult part which is making a final choice … but it’s great when you are in a position where you can’t really make a mistake in terms of quality/value.
I know when I was down to my final list it took me several weeks to choose between them and I kept switching back and forth from one to the other … so I do understand the challenge involved when you are down to such good choices. Post #9 here has more about the different ways that one mattress can “match” another one that you may find useful as a reference (or as part of your discussions with each one) and post #2 here has more about making final choices that you may also find helpful … especially when there are no clear “winners” between them.
I’m looking forward to finding out what you end up choosing 
Phoenix