Black Gospel With Good Sound

try the blind boys of or from Alabama thier cd's are very well recorded.

The ARC Choir from Mapleshade Records.
http://www.mapleshaderecords.com/cds/04132.php

Staple Singers

Take 6 (1988) - Warning: All acapella, but fabulous none the less.

I know you asked for well recorded, but James Cleveland's "Hallelujah: A Collection of His Finest Recordings" is too good to ignore. The sound may not be crystal clear, but the message of the Holy Spirit easily shines through to enormous satisfaction. A treasure of gooosebump gospel music.