If you have the stomach for it I would suggest you get the ES8788B and give Erisin another chance. There are at least two people on this forum who have this unit fitted and working properly. And I am sure Arnoud will help if needed. And so am I.
The unit is worth the effort, trust me on that.
I have it in my MK2 for several months now and have had no issues with it what so ever. The only thing I would like to see as an improvement for this device is support for multiple BT devices simultaneously. Unfortunately the chances of getting a firmware upgrade are less than none
(I should really visit the ICE section more often
)