Interesting you bring this up tonight. I have been playing Beethoven cds while cataloging my LVB cds today.
I have complete sonata sets by Schnabel ('30s), Kempff ('50s), Brendel ('60s) and others by tons of players including Solomon, Rosen, Richter, etc.
This is a life long enchantment. I do not think it will end.
If you are interested in more Beethoven, I suggest moving on to the string quartets.