300b vs 845

If the power supply design is correct and of adequate capacity heat should not be an issue with a correctly designed 300b. My Audio Note Conqueror was a space heater; my custom 300b tube rectified amp runs warm but does not materially impact the ambient temperature.

My ASL 1009-845 drives avalon opus ceramique with great impact and dynamics in 24 x 14 x10 feet room. It was a surprise as speaker is 87 dB into 4 ohms. I would have cancelled my order of ASL hurricane if i knew ahead of time.

What 845 tube gives the best overall sound?

they're more different than better-worse. What you got now? what you lookin to improve on?

I have a Viva aurora 845 driving Trios using regular chinese tubes. I have had thoughts I would like to try a 2A3 or 45 amp. I know it is less power,only a couple of watts. With the trios it should be enough though. Does anyone have any comments on the comparisons between these tubes and 845. Also, what about cryoed 845. So far I have heard mixed opinions.