Hi lovesleep,
Some of the better options and possibilities I’m aware of n the Lexington area are at the end of post #3 here.
I also wouldn’t take anything for granted about knowledge levels at any retailer. Some salespeople or retailers may be more knowledgeable and others not so much and some may carry some mattresses where they can’t provide the layering details and have others where they can. In other words I would consider them on a mattress by mattress basis and I would always focus on the ones where the retailer can provide you with all the layering details and pass on the ones where they can’t. I would also work with a salesperson who can explain the quality of the materials in a mattress to you without using their favorite “marketing stories”. If you have read the post that’s linked after my signature in each post I make and read the overviews and guidelines it links to … you will be able to tell the difference between a more knowledgeable salesperson and one who isn’t.
Phoenix