Frogman, I can certainly see why "Slide" is one of your favorite trombone players; like you say, he's got the "tromboniest" sounding trombone. Without a doubt, he will be added to the collection. That's probably how he got the nickname "Slide".
There are times when I wasn't sure whether or not I was listening to a trumpet or trombone, now I know why; Bill Watrous's trombone sounds somewhat like a trumpet, that does require a lot of speed, both of these guys will be added.
Bennie Green is probably my favorite trombone player, that's because "Soul Stirrin" is one of my favorite tunes.
https://www.youtube.com/watch?v=7aeVlQtsaFE
Can you identify who's blowing that first sax solo. Although I've got the LP, there are two tenors; Billy Root, and Gene Ammons, that's why I can't tell who's blowing the first solo. While I'm certainly familiar with "Jug", this might be the only album I've got "Billy Root" on. Can you shed some light on this?
Enjoy the music.