Hi NurseGrace,
There is a list of some of the better outlets in a wide circle around San Francisco post #2 here and a Sacramento list in post #5 here (they have a lot of overlap) that between them should give you the better outlets in your area.
I would also recommend reading the guidelines in this article which will help you avoid some of the worse choices and types of outlets (such as the ones you mentioned).
There are some good choices available to you even though many of them involve a drive. I would look at the online sites first (for those that have them) and then make a few phone calls to the ones that carry the types of mattresses you want to try. There are some good choices for innerspring/latex hybrids on the list.
Baybed and Sleepworks (both of which can be customized to your preference) and any local Diamond outlets would be some of the better values for a latex/innerspring hybrid.
From the sounds of it you could use a few (or many) good nights sleep 
Phoenix