I have the Fiscon Basic Plus fitted in my car. It's a good piece of kit, and as said comes with the add on which gives loads of basic engine functions in the Highline display, such as boost pressure (if relevant), oiul / water temps, and loads of other stuff.
Having said that I have the Bury CC9060 unit in the van (VW use the same kit as a dealer fit bluetooth unit, rebranded as VW) and it's also excellent. Has its own touchscreen, voice control etc. and works flawlessly.