Who has the best Submarines?

Comes down to three countries, Germany, U.S. and Russia. Germany is always on top of military technology, however new Virginian class and new Borei class take the cake. Their technology is too classified for a clear comparison, yet both are the quetest sub's ever made. As far as pay load, well Russian sub's equipt with ballistic missiles, know no boundaries or effective counter meassures. As well as super sonic cruise missiles which can take out fleet's (Only Russia and India have those).

Rumors has been circulating for years about Russia selling (old )clocking technology to Chinese. It is how Chinese were able to surface a submarine in the middle of U.S./ South Korea war game. Did I meation it was completely unditected.

I would say Russia, unlike it's 30 surface fleet Russian submarines have been the forerunners of innovation. Although U.S., Germany and Russia all have advanced submarines, no has such ballistic capabilities as Russian subs.