Quality & control of voice (singers): Avram Fried, Isaac Honig, Sruly Werdyger, Shloime Daskal, and Shloime Tausig
Best singers (beat, warmth): MBD, Gertner
Best composers (today): Moshe Goldman A”H, Shlomo Carlebach A”H, Ben Zion Shenker. These were consistently producers oh high quality heimishe niggunim.
Most niggunim on records today have no musical quality and are garbage – justr beat & music accompaniment.