If you like Mahavishnu Orchestra, John McLaughlin did some of his best (IMHO) work with Miles Davis.
I highly recommend these (I have them all):
- In a Silent Way, Miles Davis, 1969, Columbia
- Bitches Brew, Miles Davis, 1970, Columbia
- A Tribute to Jack Johnson, Miles Davis, 1971, Columbia
- Live-Evil, Miles Davis, 1971, Columbia
- On the Corner, Miles Davis, 1972, Columbia