GHS have a round wound core which adds a lot to feel; more costly to manufacture than hex core too - yet, they're pretty inexpensive.There may not be a difference in tone but there is definitely a difference in feel and tension.
EB and GHS 9s are way slinkier than D'Addario 9s
I've used EBs, I found them to be great out of the bag but dead in a few days - dull - lifeless.
I don't think there's a right or wrong at all out there - between playing styles, axes used, skin/secretion chemistry, etc - the best string can be shit for the next guy and vice versa. Just play what makes ya happy - but - BUT - of all the "spare packs" I have due to installation and premature breakage?? D'Adds fail the most for me.