Hi bjlewis341,
Post #3 here has some comments about adjustable beds and links to the adjustable bed thread here which has some comparisons between various models and some features that you may want to consider and some sources that I use for pricing reference purposes. Whether to buy one would be a preference in most cases that each person would decide for themselves (unless it was connected to a specific health related need). I would choose the features that you believe you are most likely to use or give you the convenience you want because these are all personal preferences.
Essentia doesn’t make it’s own adjustable bed and I would read this thread along with this thread before I considered their mattress.
The people at Electropedic in my experience will give you good information about adjustable beds including their own version.
I don’t know who makes the SouthBay adjustable beds or its specific features but it would likely be one of the three that are discussed in the adjustable foundation thread (L&P, Reverie, Ergomotion).
Phoenix