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.
Good Luck,
Good Luck,