I'm based in Winnipeg, and usually deal with Jason at Fret Nation (based in S. Calif.) for singles and custom sets. He's always been great for working out reasonable pricing. I just email him at
[email protected] and tell him what I need.
I've been using GHS Pressurewound L7200 (40-96) with GHS Progressive 130B on my Yamaha. The PWs are Alloy 52 "rollerwound" while the Prog 130 is Alloy 52 roundwound with an exposed core. They actually match up quite nicely for tonal balance by adding extra clarity and definition to the low B. The only difference I notice is the low B isn't quite as smooth in surface texture as the rest, but no big deal there.