When you say not fully compatible do you know what functionality doesn't work? All I need is phone book and calls. I want the in dash display to work and obviously the steering controls.
Anybody actually use Siri, just don't get talking at your phone after the five minute novelty value wears off...ignoring the fact you look a knob while you're at it
It's only a little more and I thought it best to go for the latest one as we all know things will go **** up once ios7 is released and I'll have the best chance with the latest viseeo.