well. van cliburn's is hard to beat. did barry douglas ever do the tchaikovsky pc? imagine after winning the tchaikovsky competition in 1985, he'd have to. i would have gone to that - the way he played 'pics.'
Lazar Berman's recording with Von Karajan is beautiful, poetic, and is only necessarily vituosic in places where the music calls for it. That recording was released on DG. After years of hearing this piece, I still think that version is the most sensitive and the best overall...
For "un-virtuosic" playing, you should hear Horowitz/Szell. After having heard his other versions I couldn't believe it was the same pianist. So slow and romantic. Especially towards the end of the third movement, he shows us that the octaves don't need to be thumped out, but that they can be played soulfully. Beautiful.