Originally Posted by michael_t
Who are the other four? I mean, which are the other four brands?
Fodera - Stainless and Nickel Plated Steel strings
Dean Markley - NPS Super Rounds / Stainless Super Rounds
Thomastik-Infeld - Jazz Rounds (Round Core wrapped in silk w/ Pure Nickel outer wrapping)
R.Cocco are said to be a mix of both Round and Hex depending on the gauge, but honestly I never checked.
While at NAMM I found a Korean company that supposedly makes their own strings that had a round core variety...
I believe Pyramid makes Round Core electric rounds strings as well.
Pretty much everything else out there is Hex core. Much easier to manufacturer, less user difficulty during installation (resulting in less "bad" strings), and lower cost of materials.