I am 5 10 and want some opinions on what length ski for the Bonafide I should get. I am a midwest skiier.
173 minimum and if you have good skills 180. Since you are asking the question it sounds like you've never skied them. If not, you really should find out what it feels like to hold an edge on ice with a 98mm ski. If you only ski in the midwest, there are other skis which are more appropriate.