I use and trust 1x19 316 SS from Sailing Services (
www.sailingservices.com). I think Brion can you sell you this wire directly at competitive prices if you are in the NW neighborhood.
At one point the wire was Korean, not sure if it still is. Call and talk to Brooks Jones (the owner), he knows his wire and sources and can give you the straight scoop.
I did a boat a few years with Loos (at the owner's request) -- it was miserable, dirty wire.
Bob