Hi CindyBearcat,
I personally wouldn’t recommend either as being particularly good value. Some guidelines that may be helpful in eliminating most of the worse choices in your mattress search are here. As you can see I would avoid all major brands and chain stores.
Some of your better choices in and around Cincinnati (50 miles) include some good factory direct manufacturers. Some of these are a repeat of the thread mentioned by Matt (thanks :)) but has a few other options because I centered the search around Cincinnati rather than Yellow Springs.
http://www.sleeptitemattressfactory.com/ Franklin, OH Local factory direct manufacturer who make a range of latex, memory foam, and innerspring mattresses.
Find an Original Mattress Factory Store Florence, Cold Spring, KY. Regional factory direct manufacturer who also make a range of latex, memory foam, and innerspring mattresses.
Denver Mattress® - The Easiest Way to Get the Right Mattress Florence, KY. Regional factory direct manufacturer. They also make a range of latex and innerspring mattresses.
https://designsleep.com/mattresses/7-zone-natural-latex/ Yellow Springs, OH Retail direct outlet for Berkeley Ergonomics. I think highly of their knowledge and service. They carry a range of latex, latex/innerspring, and latex/microcoil mattresses.
http://www.bowlesmattress.com/ Regional factory direct manufacturer that makes their own and Lady Americana mattresses with many outlets throughout KY and other states. The closest stores are listed on their google map here.
ADMIN NOTE:Removed 404 page link | Archived Footprint: maps.google.com/maps/ms?hl=en&ie=UTF8&msa=0&msid=101453599020192500849.000467b101a4d522a93c6&ll=38.582526,-85.319824&spn=4.121979,7.03125&z=7&source=embed
https://marksmattress.com/ Richmond, IN. Carries their own line of private label memory foam and latex mattresses called Sleep Natural that may include some better quality/value options. I would avoid the major brand and liquidation mattresses that they also carry.
Shop Affordable Home Furnishings & Home Goods - IKEA West Chester, OH Sells a Dunlop latex mattress using 85% natural Dunlop and an innerspring with the same material on top. See post #3 here for some of the other mattresses they carry. The Dunlop core could be a good option to add a talalay latex topper on top.
These would certainly give you better choices and better value than the major brands and the chain stores (like mattress firm) that are available in your area.
Hope this helps.
Phoenix