All kidding aside--WHAT I dislike encountering is usually situational. For example, if I'm in a YAK I don't like cons that wish to engage above 5,00o meters (call it 15k). I must say I am surprised at the prescence of Hurris and Zekes on people's lists---both of those rides have significant limitations such that I find them a joy to encounter. Of course, pilot skill is usually more critical than the plane. I suppose I must answer so I will say Niks and Tempests. All of the 4 x 20mm rides leave little margin for error with regard to a ping, or improbable deflection.