Kind of Blue is a phenomenal album. I do keep coming back to it.
However my favourite Miles is side one of In A Silent Way. First ‘jazz’ ablum I ever bought. A Tribute to Jack Johnson related and I love too. On The Corner (but only in smallish doses).
Coltrane I love the Impulse stuff (Crescent esp) up until Elvin left. Its a bit too out there for me too.
Blues & Roots is worth a listen. I think Mingus tends to get overlooked a bit for some reason.