Friend
The nod goes to the 45 as the best of the tubes you listed. My experiences are:
45=Very honest and sweet with the entire frequency spectrum.
VT52=No experience with this tube.
2A3=Great detail over the entire frequency spectrum -but too thin in the lower octaves.
300B=Exaggerates the presentation.
845=Very nice and honest presentation. Almost as sweet as the 45.
EL34=Very sweet and romantic performer, but simply cannot do what triodes do for the presentation.
6550=Sounds like a great stereo - not a real presentation.
KT88=Better than the 6550, but still not a real presentation.
The nod goes to the 45 as the best of the tubes you listed. My experiences are:
45=Very honest and sweet with the entire frequency spectrum.
VT52=No experience with this tube.
2A3=Great detail over the entire frequency spectrum -but too thin in the lower octaves.
300B=Exaggerates the presentation.
845=Very nice and honest presentation. Almost as sweet as the 45.
EL34=Very sweet and romantic performer, but simply cannot do what triodes do for the presentation.
6550=Sounds like a great stereo - not a real presentation.
KT88=Better than the 6550, but still not a real presentation.