For new tubes the Shuguang Dawning Series WE6SN7 PLUS are excellent. I'm actually surprised how good they are. Give them around 100 plus hrs. to settle down.
Otherwise, you'll spend much more for Tung-Sol round plates or Sylvania 6sn7w tubes. These will give you the sound you are looking for.
Otherwise, you'll spend much more for Tung-Sol round plates or Sylvania 6sn7w tubes. These will give you the sound you are looking for.