Hi Ron … and welcome,
As you probably know from this thread … I consider the iComfort to have poor value (as are most of the national brands compared to other higher quality less expensive choices made by independent manufacturers). In the same way, the adjustable base that is sold with it is also significantly more than other almost identical options although they do have a matching cover and a zipper attachment which others don’t have. For reference … the best prices I have seen for the major brands of adjustable bases are here so you can have a comparison before deciding whether it is worth purchasing the iComfort motion perfect base.
In terms of the mattress itself … I normally recommend looking at local manufacturers for the best quality and value mattresses. For those who don’t have a local manufacturer near enough to where they live, then “lay on mattress” testing done locally to find out the materials and layering of mattresses that best suits your needs and preferences can serve as a blueprint for an online purchase from a factory direct outlet which can help you to “duplicate” the type and layering of mattress you prefer.
Your better choices in the Indianapolis area are listed in post #2 here
I would certainly tend to avoid the Mattress World, Mattress Firm, American Mattress type of outlets that are quite common in your area and typically sell national brands which have much lower quality and value and who do everything they can to discourage comparative shopping based on actual materials in a mattress.
Some online memory foam mattress choices are in this thread.
Hope this helps.
Phoenix