My husband and I were both experiencing lower back pain after getting out of bed in the morning. We struggled with this for several months before deciding to try a different bed.
We purchased a sleep number bed and it has made a huge difference for us. I like my side much softer than him, and his side is more firm, but neither of us has the back pain anymore.
If my back starts to hurt, I just adjust my sleep number and it takes care of it. I really notice a difference if I sleep in another bed away from home. I usually wake up with a sore back every time.