How long did you study Aikido prior to training in Nihon Goshin Aikido? After watching some video of the style I find myself a bit skeptical to be honest. Is this video representative of the skill level one would expect of a Nidan in this style?
http://youtu.be/p5em6yaOg8M
I'm not trying to be cynical, but calling a style "the best of the best" is opening up in-roads into criticism.