X10 Security System Differences

[nswint]

I'm posting this to see if I can get some more clarification on security systems offered by X10.  From what I see, there are 3 types:  Protector Plus, Monitor Plus, Pro2000. The differences that I see are these:

• Protector Plus:
  - Built-In Powerhorn
  - No Orca Monitoring
  - Remote Powerhorn/Light(s) Flash via All UnitCodes under Selected HouseCode
  - Recorded Message Can Be Sent to 4 Telephone Numbers
  
  
• Monitor Plus (OLD - 8700):
  - Built-In Powerhorn
  - Orca Monitoring
  - Remote Powerhorn/Light(s) FlashThrough Fixed Address A13
  
  
• Monitor Plus (NEW - Pro2000/8700P):
  - No Built-In Powerhorn
  - Orca Monitoring
  

[TTA Edit: Formatted for improved readability and future reference; added what I knew off-hand. Others please chime in and either OP or I can update.]