Have been very satisfied with my Delphi 6.0 (with cadence, HRM and altitude)- used for 1 yr on my road bike. How easy/hard is it to use on a 2nd bike?

I've been told by the Blackburn/Delphi folks that I need to have a local bike store order a 2nd mount (I haven't seen any for sale online.)

I assume I need a 2nd "wirless transmitter" as well as a 2nd handlbar mount and 2nd cadence magnet/sensor. Not sure how much that will cost.

Does it make more sense to just buy another Delphi computer instead? For example - the Delphi 2.0 - and then just use the mount? Will my Delphi 6.0 work on the Delphi 2.0 mount?

I guess I am really asking- are all of the computer" brains" in the display device or is the wireless transmitter also different for different models?