I have to say that Giant Steps is very overrated IMHO, and that in general I don't find the Coltrane / Atlantic years (as documented by the Heavyweight Champion set) particularly fascinating, although Ole and MFT are very good, obviously. Nor am I attracted to earlier Coltrane on Prestige, other than Soultrane.
Things get interesting with the Village Vanguard recordings, and accelerate towards some of the most extraordinary music ever created. Both Ascension and A Love Supreme are good, albeit overrated in different ways, but Meditations and Living Space are among Coltrane's masterpieces; it's on his later live recordings, however, such as Live in Japan and Live in Seattle, that I think Coltrane is at his towering best.
If anyone here likes Interstellar Space, you might find tonight's Jazz on 3 worth tuning into;
Next up is Rashied Ali, who is perhaps best known for his work with
John Coltrane during the last few years of the saxophonist’s life. There’s
music from the duo album they recorded together in 1967 – Interstellar
Space. And, amongst other things, Rashied talks about the recording
session for the album; it was something of a surprise when he arrived at
the studio to find that Coltrane hadn’t invited the rest of the band
along! Ali was in London with his excellent new quintet and the programme
also includes a track from their latest album: Judgement Day Volume 1.