The best recorded Bird session, I think, is the final Verve one, his incomplete Cole Porter session. Love for Sale is the best of the session, and you can really hear his sound on this one. The other small group sessions recorded for circa 1953-54 also sound quite good.
I've always found the Savoy studio sessions to be well recorded, and the source material has been well taken care of.
I also like the sound of the Quintet recordings on Dial, but the source material here is more haphazard and seems to have been less well preserved.
If I could only keep one jazz soloist in my music collection, it would definitely be Bird.