Hey Sensei
Thanks for considering a mattress purchase from expert trusted member Mattress To Go
! I regard them most highly in terms of expertise, quality and customer support post-sale.
Jeff was a fantastic! Someone who knows the industry and really explained everything in terms of materials and did not push us at all was refreshing. We are also looking at King mattresses, so he was quite helpful as we begin our search for a King mattress as well. I'll make a separate topic on that once I get some specs on a few mattresses
You don't say, but was this the only twin option in the thickness range that you found so far? Would you rather find a mattress whose support and comfort were ideal from the start and avoid doctoring it with more bulk that you're trying to minimize from a height/ thickness standpoint?
Outside of Amazon or online retailers where it just says "6"foam mattress" and doesnt give me any specs not really. I found a post by Pheonix on the forum that listed all the Mattress retailers in the Metro Detroit Area and Peerless mattress had this
Brighton Gel Mattress
but when I called them they didn't have much info on the specs. They said the top 1.5" layer of gel foam was 1.2lb and couldn't give me any specs on the 4.5" base layer. Even assuming it was 1.5lb or 1.8lb, it seems like I'm better off with the Therapedic that Jeff has to offer topped with a topper since 1.2lb doesn't meet the threshold of good quality foam based on what I've read on this site.
I called the Mattress Source in Lansing, they said they have a Capitol Bedding mattress that is 7". 7" might be the highest I can go based on measuring that daybed from slats to top of the bed. It is made specifically for Mattress Source, so I couldn't find it on the Capitol Bedding website not could I get any specs from the sales person. I am a huge fan of Capitol Bedding (and the Mattress Source), potentially a bit bias too

because my current mattress is from them and I really like it and like them as a company. So I am going to go check that one out and also see if I can get more specs on the materials. Though talking to the person on the phone, I was told it was coils as the base and a sheet of foam on top. So I would assume it is similar to the Therapedic that Jeff has.
Would you rather find a mattress whose support and comfort were ideal from the start and avoid doctoring it with more bulk that you're trying to minimize from a height/ thickness standpoint?
Ideally yes, but price and quality of materials/value are the biggest driving factor here. If I can find a mattress that 7" or less that is good quality materials that I can get locally in Michigan under $200 per mattress, that would be best case scenario. Upping the price a bit since I figured a good mattress topper would be around $100 for a twin to have a good comparison. If I have to doctor it up by adding a topper, that is not the end of the world. The topper(s) will honestly only be used when the trundle is pulled out and for sleeping
Thank you so much for helping me decide on a mattress. I am so glad I found this site 5 years ago when I was looking for my mattress, and always recommend this to anyone looking!