Bb - What is lacking and what direction do you want to push them? I wouldn't think 300B GENERALLY would be the best choice, as they are voiced toward the warmer side which the Druids are as well.
I'm always in favor of trying as many combinations as possible, especially if "another amp purchase is out of the question". That does really narrow the options. I suppose if none of your amps work well you will need to revisit that qualification or dump the speakers.
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