57s came stock in my ‘93 Lonnie Mack V and my ‘06 LPC ‘68 RI. In the V they sound killer, perfect balance between neck and bridge. I did replace the bridge with a 490R w/short A5, but not because the 57 lacked anything, I just prefer A5 in bridge pickups. The 57 neck pickup is probably the best neck pup I’ve owned. In the LPC, neck is muddy, bridge is a bit thin and nasally, balance is poor, not a fan. Both guitars have NOS Centralab 500k pots. Maybe it’s the guitars themselves, or maybe there’s some truth to the earlier 57s being better?