To be honest Dan, this subject has been discussed frequently on this website, I'm sure a search for "line conditioners" would pull back results.
Personally, I use the Tripp Lite HTPowerber10 and could not be more happy. It offers great surge protection and yes I do believe the line conditioning/monitoring or whatever you want to call it actually does something. It monitors amperage and keeps the voltage constant at 120v with no fluctuation on the circuit.
I'm not sure I'd spend that kind of money though. Your HT1000 is probably fine for protection. I'd spend the money on other important things on your "Want" list.
