Hi Herdo,
I’m sorry to hear that your Casper mattress didn’t work out for you but the good news is that they have a great return policy so there was little risk in trying it. Just in case you haven’t read it yet … I would make sure that you’ve read the mattress shopping tutorial here which has all the basic information, steps, and guidelines that can help you make the best possible choice … and know how and why to avoid the worst ones.
Outside of PPP (Posture and alignment, Pressure relief, and Personal preferences) the most important part of the value of a mattress purchase is its construction and the durability of the materials inside it (see post #13 here). I would make sure that you find out the quality and durability of all the materials in any mattress you purchase and I would be cautious with the Novaform mattresses which often use lower quality and less durable materials in their comfort layers which can soften and break down prematurely and lead to the premature loss of comfort and support and the need to replace the mattress much too quickly relative to the price you paid for it.
You can also see some comments about the Consumer Reports mattress ratings and recommendations in post #2 here and in this topic. As you can see I (and most knowledgeable people in the industry) would consider them to be a unreliable source of guidance about purchasing a mattress.
You can also read more about gel materials in post #2 here but for the most part the cooling benefits of gel are fairly temporary and while they may help a little while you are first going to sleep once temperatures equalize they won’t last over the course of the night.
I think that Herdo has covered most of the more important information about Charles P Rogers but there are also some additional comments and information about them in post #34 here (and the rest of the topic) and in this topic and a forum search on Charles P Rogers (you can just click the link) will bring up more comments and feedback about them as well.
There is an analysis and more detailed information about Saatva in post #1 here and a forum search on Saatva (you can just click the link) will also bring up more comments and feedback about them as well.
Brand shopping can be among the most risky ways to choose a mattress because all manufacturers have access to the same or similar components and materials and most of the most heavily advertised and most commonly available brands that you would recognize are the ones I would avoid anyway (see the guidelines here) and many of the better manufacturers are smaller and are only available locally or regionally. The name of the manufacturer on the label won’t tell you anything about whether a specific mattress is suitable for you in terms of PPP or whether there are any lower quality materials or weak links in the design. There is more about the risks of brand shopping in post #5 here and post #12 here).
I would focus much more on the types of mattresses and materials you tend to prefer and on using the information in the tutorial to find more knowledgeable retailers or factory direct manufacturers either locally or online that are completely transparent about the materials in their mattresses and that can provide you with the type of guidance that can help you make the best possible choice regardless of the brands they carry.
The better options and possibilities I’m aware of in the Chattanooga area (subject to the value guidelines I linked earlier) are listed in post #2 here.
Phoenix