Hi Matt123,
Hopefully you’ve had the chance to read the tutorial post here which has all the basic information, steps, and guidelines that can help you make the best possible choices … and know how to avoid the worst ones. It’s always the best place to start.
Quality Sleep Shop and their sister company My Green Mattress are one of the members of this site which means that they compete well with the best in the industry and they would probably be the first (and possibly the last) place I would visit if I was shopping for a mattress in Chicagoland.
Some of the other options and possibilities I’m aware of that may also be worth considering are listed in posts #2 and #4 here.
[quote]One more thing: I do have some backpain, so the matress has to provide a nice weight and pressure distribution.
I am 5’10’’ and about 175lbs. My girl is about 115 lbs and 5’3’'. We both like it firm and want to have one large mattress.[/quote]
Choosing the mattress that is the best “match” for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) depends on your personal testing and experience (hopefully based on the testing guidelines in the tutorial post) and is the part of mattress shopping that nobody else can do for you because nobody else can feel what you feel on a mattress (see mattress firmness/comfort levels in post #2 here).
Phoenix