Source for tube shopping?

I'm in need of a dozen EL34s for my Cary V12. I'm going to go with the new issue Electro Harmonix tubes, largely because they seem to be well rated, they're reasonably priced, and I need a lot of them. I'm looking at three websites - Tube Depot; Antique Electronic Supply; and Amplified Parts - all of who offer matching services for the tubes at between $13-$15 per tube. Does anyone have any experience with any of these sites they could share, or do you have a recommended alternative? In a little bit of a rant, Cary wanted to charge $40 EACH for this same tube, which is some first-class gouging if I've ever seen it. Any experiences are appreciated.