My setup is:
Passat 2006 2.0 TDI
RNS510 installed (mfd2 original in car)
Original RSAP premium bluetooth
RED FIS
Multi function steering wheel

Im looking to swap my bluetooth unit so i can use my iphone and stream spotify

I have been recommended 7P6035730 / 5K0035730 D/E but im not sure which of them is the best choice.
As i understand non of these units supports my FIS, but you can pair unit's frome the phone??

5K0035730

• What are the diffrences between 5K0035730D and 5K0035730E ?
• Will it support my steeringwheel buttons?
• Will it work well with A2DP ? As i understand it support current playlist data (title and album)

7P6035730:

• Newer unit than 5K0?
• Requires can gateway upgrade??
• Does not support playlist info during A2DP??
• Will it work with my steeringwheel?

Is there anything wrong here, or any importantant info im missing