Yes, resurrecting a zombie thread. I was actually looking for something else when I stumbled across this thread. Fender 9050 flats in their current iteration and EB Cobalt flats did not exist when this thread was started, and as explained below, EB Stainless Steel Flats were overlooked. So here's an update:
Growliest flats: Fender 9050L, what most folks think of when you say growl;
Growl with clank: Ernie Ball Cobalt Flats - almost rounds in their clank to go with the growl;
Subdued growl: Ernie Ball Stainless Steel - rounder in tone than Fender, but still a good subdued growl. I use an EBSS 105 single when my Fender 9050 E string goes thump, because you can't get Fender singles. EBSS flats are probably the most underrated strings on the market.
All three of these are growlier than what is listed above by comparison. By comparison, La Bella have top end articulation but smoother overall tone; Chromes have new string zing that fades to worthless thump; and TI's don't have the presence for a lot of mixes, and worse have the floppy rubber band A string.
Growliest flats: Fender 9050L, what most folks think of when you say growl;
Growl with clank: Ernie Ball Cobalt Flats - almost rounds in their clank to go with the growl;
Subdued growl: Ernie Ball Stainless Steel - rounder in tone than Fender, but still a good subdued growl. I use an EBSS 105 single when my Fender 9050 E string goes thump, because you can't get Fender singles. EBSS flats are probably the most underrated strings on the market.
All three of these are growlier than what is listed above by comparison. By comparison, La Bella have top end articulation but smoother overall tone; Chromes have new string zing that fades to worthless thump; and TI's don't have the presence for a lot of mixes, and worse have the floppy rubber band A string.