I've had the Jazztet set for a while now--one of my favorites.
I am, however, still on the fence about the Capitol set--at the moment leaning towards not getting it.
I ponied up for the Jazztet. . . even though I had almost all the material.
I find myself. . . bored. The music just doesnn't excite me these days. Other days in the future will probably be different.
I'm so glad I bought the Capitol set years ago. It's expensive and I would be hard pressed not to go for it, and hard pressed to afford it. I don't want to live without it.