It´s maybe a dumb question but which Unity Version should i use actually to build a Mixed Reality App including MC. Can i go with 2017.2.1.4 or must it be 2017.2.1.4 and which ToolKit should i use therefore?
It depends on the features you need. Last versions of MRTK and UNty have added some new advances, but there is also a lot of anoying bugs. Check this topic What version of Unity is best for Hololens development at this time?
i was wondering the same question.