Nice, Steps. I enjoy the LA Jazz Choir (a recording on Mobile Fidelity Sound Lab recorded and engineered by Keith Johnson if you could find a copy) and several from The New York Voices. Saw a Dallas high school jazz choir on PBS doing some really neat singing but couldn't find any more about them. What an instructor they've got. They could record right now from what I heard. Cheers.
Toots Theilemans plays a nice jazz guitar, too, in case you didn't know.