+100% on Bugle Boy’s best sound for the $. Gold pin 6922 also a good choice but a jump in price. Owned both and sounded excellent in my DAC. I would recommend the Russian 6922 equivalent 6n23h. They sound even better on my DAC. Compare them to 7308 and E188CC’s. Have to get the Single wire getter version. Both Reflector and Voshkod sound great. Have both. Downside is you have to order from Ukraine taking 3 weeks. I have had good experience and cost is low enough to be low risk. I like to help them out during the awful war. see link ‘73 1st choice. Good luck with your search!