Personally I really liked the HUD when a drove a demo 35i but couldn't pull the trigger on order day @ $1000/ 940 after discount.
The next day I decided to go for it but build had already started 20 hours later.
Of course now I REALLY wish I had it. Staying near the speed limit is VERY difficult with the 35i
2014 BMW X3 35i M-SPORT/PREMIUM PACKAGE/HEATED FRONT SEATS/NAVIGATION/BLACK SAPPHIRE