Getting back to the question about smooth jazz, about 20-25 years ago I really got into it the GRP label in particular with artists like Dave Grusin, Lee Ritenhour, Kevin Eubanks. I also have several albums by David Sanborne and Spyro Gyro both of whom I listen to occasionally. Eventually I found most of the music wanting, I couldn't connect to the factors that makes you want to come back for more. While I can certainly appreciate the technical abilities of all the above not to mention the merits of most of the recordings I never emotionally connected to the music. Maybe time for a revisit?
Thanks to all the posters who added to my quite limited knowledge of this genre, I'll be sure to check out some of the above I'm not familiar with.