I can't make a judgment on which one is better. I just love the thing when he drops by the circuit. I can slip in my go-pro's SD card in the little reader he has in his ashtray and review my practice sessions, between sessions. Of course while cooling down using his petrol and A/C
Those services alone, meaningless to you maybe, made me wonder if he was the 986s Master of the Universe for a few minutes!
iPad will be equally a good set-up if not better in many other ways I'm sure. I was just sharing what others came up with.
Can't you link a touchscreen to an iPad?? That way you could take the (expansive) iPad in and out of the car while keeping the touchscreen in the dash permanently. Any soft/hardware to output the graphic of an iPad these days.... would be hard to believe this technology is not available at "Apple"