SE direct heated triode amplifier

i was looking to buy a SE direct heated triode amplifier for my open baflle speakers and had read about the sound of new audio frontiers 300B or 845 tube amplifier,or Tektron 211 tube amplifier,and also kurashima EML520 tube amplifier.who have heard these amplifiers or compared the sound of these amplifiers,can help me in by writing about their experience with these amplifiers