Thanks, Jeri. It looks like this place and Rio Grande are still print catalog driven. It also looks like there are many options when it comes to stringing beads. This place is certainly candid about their products. Here's their blurb on some stringing materials:

Everybody loves SOFTFLEX
Nobody loves the price.
That settled, we sell loads of it.
Softflex is a flexible, kink-resistant wire that can be knotted and tied. Please specify the diameter and the length of your spools.
It's a diameter, not a gauge, so it gets heavier as the number goes up. And all we have is clear, which really isn't clear.

SRS