I have an iPhone 6 on iOS 10.3.3 and i'm abstaining from updating due to the battery issues and people complaining about their phones getting slower, some people are saying iOS 11.0.3 is ok but it's still leaning towards bad and some people have reported that iOS 11.1 Beta 3 is very very good. Should I update or stay on 10.3.3 until iOS 11.(x)