Alexeï Lubimov - My favourite living legend. The magic touch, helped by some wonderful ECM recordings. Lubimov has played everything tonal, atonal, lyrical, contemporary, from Mozart to Cage. I love his work with newer Russian composers.
Marino Formenti - The hands of surgeon. Fairly recent acquaintance, avant but also mysterious and magical. I love his interpretations of anything he touches from Kurtag to Stockhausen. His own music is pretty hot too.
John Tilbury - I mentioned him on another thread. British player now in his 70s, mostly known for his astonishing interpretations of the late Feldman pieces. Also involved with the early Cornelius Cardew graphical scores as well as being a permanent member of the AMM group. He is the past the present and the future.
Alfonso Alberti - Another new voice from Italy. He's been given quite a lot of recent premieres from upcoming and established living composers (Pesson, Sciarrino, Coluccino). A name to watch.