I have used 5814s on occasion and find them to very well balanced in terms of frequency extension and having a clear strong voice (that's a good thing). I know I tried several others but none were as good as the RCA.
My preference is still to use the Amperex 7316, which I was fortunate to collect before the price became ridiculous and so many counterfeits were on the market. Why the 7316 , it's a subjective thing really I just prefer the way they sound.
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