Ah ha!
Well Im sure FW1100 didn't have the voice control option so when you fit your 729B BT then make sure you get the voice control enabled wiring loom.
Also you'll get full 7 digit postcode entry which for some reason was never standard issue!!!
Apart from that I'm not sure as I'v only ever run FW2760 and V7 maps!! I'm sure Darren could tell you though
Oh and I think being able to use SDHC cards wasn't available on FW1100.............