For the early Columbia releases, I seek out the six-eye LPs. Miles was probably the most popular act in jazz, so they are actually more common than you might assume.
For later albums, Bitches Brew being one example, I prefer the quad Columbia LPs to the Stereo issues, though they are a little harder to find and a tad dearer.
LPs that were released in mono should always be purchased in mono, as already mentioned, reprocessed for stereo is the kiss of death.
If you are looking for the early Blue Notes, Vol 1 and Vol 2 there are some nice Japanese pressings floating around by King. Originals, or the 10" wax, can be pretty pricy at this stage of the game. King also did a nice job on Cannonball Adderly's "Somethin' Else" which is arguably actually a Miles Davis album, but contractually he could not be identified as the leader.
For later albums, Bitches Brew being one example, I prefer the quad Columbia LPs to the Stereo issues, though they are a little harder to find and a tad dearer.
LPs that were released in mono should always be purchased in mono, as already mentioned, reprocessed for stereo is the kiss of death.
If you are looking for the early Blue Notes, Vol 1 and Vol 2 there are some nice Japanese pressings floating around by King. Originals, or the 10" wax, can be pretty pricy at this stage of the game. King also did a nice job on Cannonball Adderly's "Somethin' Else" which is arguably actually a Miles Davis album, but contractually he could not be identified as the leader.