I used the JJs with great success. No longer own that unit. Sounded best with Black Treasure 300Bs though.
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I don't have any recommendations, but be careful with some of these newer 300B tubes. Some of them draw a lot more amperage for their filaments, than the real original 300B design tube did. Some have other specs that may not work in your amp either. A lot of amps can't handle some of the new 300B tubes. If you find a new tube that draws more than 1.2 filament amps, check to find out if your amp can run them.
I guess they don't have standards like they did in the tube only days. I think these new (different spec) 300B tubes should have a different number, since they are different. Just a heads-up. A link to an article about this. [http://www.stereophile.com/features/229]
In your stated price range if you can find black treasure tubes they`ll outperform the others on your list. They also conform to the Western Electric 300b spec standards. It`s a touble free tube, I used mine quite heavily nearly every day for close to 3 years,not a single issue.I`ve since bought the Takatsuki 300b but the BTs are still working just fine.