A lot of it is balancing desired range with playability and comfort in the hands. OP possibly didn't want a string higher than the little Eb or lower than the seismic C#.I will admit right up front that I would never have one of those - I have trouble with a 6 srting guitar, for god's sakes - but, purely in the quest for enlightenment - why 11 strings?? As opposed to, say, 12? Please enlighten this poor old Rockabilly 4 string player...![]()