Finest integrated SE under U.S. $ 6,000.00

Although it does not have a $6000 look,or price ($2995) I would include the Plinius 8200 MkII in the group.

David Berning Siegfried 300B SE ZOTL. None finer. The only "OTL" single ended design ever made. But be careful. It will reveal ALL, and if there is anything lacking, you will hear about it.

Mark Levinson 383. Need I say more??

The 383 is far from being a tube integrated so it is ruled out here, not to mention I find it kind of dull.

I would opt the Unison Research Simply 845 (845 tube) which sounds might fine, as does the Cary 300SEI (300B). The inexpensive Antique Sound Lab AQ1010 (300Bs in parallel) is surprisingly good too. Arthur