Guitar Nerds Anonymous

They do all sorts. Reputation was for cheap rough things hence Guy Clark's song.

Black Diamond Strings
Black Diamond Strings
Drinkin’ 1 W. Harper
Playin’ Black Diamond Strings
Black Diamond Strings
Are like white flour and grits
You play Black Diamond Strings
‘Cause it’s all you can get

Black Diamond Strings on a Catalog Guitar
That’s pretty high cotton whoever you are
You break one you change one, that’s as good as it gets
You can play all year long on two or three sets

I'm assuming he refers to their acoustic ones.

For steel acoustic strings you must have Thomastik Infelds otherwise you are not doing it properly