I hate to admit it Jim, but most of that was over my head. I really do appreciate your time, though, and you sound like you know exactly what you're talking about.
Would you be so kind as to point me towards a particular brand of robotic cleaner? I'm afraid my brain is about fried as far as pool cleaners are concerned. Something that does a good job, has decent customer service, and does it's thing in a reasonably short amount of time would be ideal. Something that does all that for $500-$600 would be especially perfect!

Anyone else who has an opinion please feel free to chime in, as well! Thank you all very much for all the help!