I used to have an 800, but exchanged it for the cheaper Breville Ikon.
The reason being, at the time there were many more recommendations to go with a machine with a boiler as opposed to a thermoblock!
This was a year and a half ago now, so opinions may have changed.
I havent looked back since getting the Ikon!
What ever you get, buy yourself an un-pressurised filter (Krups or Breville) so you learn the art of grinding & tamping correctly
Enjoy the journey *8-)