Hi DREAMGIRLY,
The better options and possibilities I’m aware of in and around the Phoenix area (subject to making sure that any mattress you are considering meets the quality/value guidelines here) are listed in post #4 here.
You are very fortunate to live where you do since several of the manufacturing members of this site are based there which gives you the chance to test mattresses in person that most of the rest of the members that live in other areas of the country can only order online without being able to test them first.
Phoenix