D180 is a fine product. I fly behind a D100. Same eFIS without the EMS. Have considered swapping up many times.
My D100 is the altitude encoder for my GTX327. I'm switching to a GTX330ES so the GNS430W will be my gps position source and the D100 will still be the encoder.
I'm not aware of integration between legacy Dynon boxes and handhelds.