Good topic. I'm surprised at the lack of replies.
Off the top of my head, here are a few of mine:
- Ben Webster
- Amhad Jamal
- Wynton Marsalis (mostly the "Standard Time" releases)
- Count Basie "88 Basie Street"
Basically, anything without lyrics.
Lyrics "guide" my thoughts somewhere they don't need to be whereas instrumentals allow me to "float".
Sounds deep doesn't it.

Bob