I picked up Royal Flush, Another Workout, The Cooker, and Here To Stay, so far.
I already had the first two, but must say that the focusing effect of having Royal Flush as a separate album has made me really appreciate it all the more. Listening to it on the Mosaic, it just sort of gets blended in with all the other Pepper/Adams sessions. So much more of a "one-two-punch" as an album. (Of course, I always liked that cover.) The other favorite is Here To Stay. I long considered Open Sesame and Ready For Freddie to be my first and second favorite Hubbard Blue Notes, with Here To Stay a strong third. Now, I don't know---listening to it recently has moved it up a notch or two. Another very strong session that somehow didn't get released at the time.