Best piano version of Moonlight Sonata?

There is no absolute "best". My favorite's of currently available CD's of living artists are Richard Goode (his whole set is excellent) Brendel on Phillips mentioned above, and last, but NOT least, Ivan Moravec who's VIA Audio CD also includes the Appassionata, Pathetique and the Les Adieux Sonatas as well. This last CD is not only excellent but the recording is outstanding as well.

I agree with newbee re Richard Goode, and imo Glen Gould is great playing Bach but not so great playing Beethoven. Good Luck..there are really so many to choose from.

My personal favorite is Horowitz,but the recording is "average".

John Atkinson helped record and master Robert Silverman playing all 32 of Beethoven's Sonatas, available from Orpheum Masters. I purchased mine on the Stereophile website for about $70 a few years back for the 10 disk set, a great value. If you like the Moonlight, you will probably enjoy getting to know the set. Excellent recording, though I am not qualified to compare the performance versus the other recommendations.

Emil Gilels also wonderful,