They said that the only benefit to hex was for the ease of manufacturing. Because the hex core is actually ellipse shaped, not perfectly equilateral, the tension of the wind is irregular across the winds. With round core, the winding doesn't grab anywhere, so it's completely uniform.
The current owners inherited it from family only a couple years ago, and they're trying to grow the business a bit. They only recently started making bass strings. I didn't ask if they had any ready to go because they don't make flats. According to them, flats take are labor intensive to build; they take a lot of experience to get right; and it's a long learning curve. In their opinion, the best flats are coming out of Germany. This is not something I necessarily agree with, as I feel they're coming out of Upstate NY.
As far as gauges, you'd have to call them to see what would work best for you. The owner mentioned not caring much to go by gauges because it tells very little about the performance of the string. I can understand that. As we've all experienced, two sets of strings with the same gauge, same material, and same type of outer wind can be nothing alike.
And IIRC, they don't use stainless because the nickel is plated steel. I guess he feels it's redundant among the other winding materials that they use. Again, they make strings for much more than electric bass and guitar, so maybe they feel the difference isn't worth it for them.
The only pic I took was of two turtles humping at a pet store that I walked by to kill some time while waiting for the others to arrive.
*All of the above is subject to correction.
