Who is the worlds best viola player?

It is difficult to objectively determine who is the "world's best" viola player, as it is a subjective matter based on personal preferences, technical skill, musical expression, and other factors. However, there are a few viola players who are widely recognized as being among the best in the world. Here are a few notable viola players:

Yuri Bashmet: A Russian violist, conductor, and pedagogue. He has performed extensively as a soloist and conductor and is known for his technical prowess and emotive interpretations.

Kim Kashkashian: An American violist of Armenian descent. She has performed with renowned orchestras and chamber ensembles and is praised for her rich and expressive playing.

Tabea Zimmermann: A German violist. She has won numerous international competitions and is admired for her virtuosity, musicality, and wide-ranging repertoire.

Maxim Rysanov: A Russian-American violist. He has performed as a soloist with leading orchestras worldwide and is known for his exceptional musicality and technique.

Lawrence Power: A British violist. He is the principal violist of the London Philharmonic Orchestra and is celebrated for his versatility, passion for contemporary music, and commitment to education.

It's worth noting that this is not an exhaustive list, and there are many other talented viola players who could be considered among the world's best. Music appreciation is subjective, so the "best" viola player will ultimately depend on the tastes and preferences of the listener.