1x19 wire is the standard rigging wire but
it's not intended for bending around thimbles. 7x19 is much more flexible and is normally used for running rigging. It's the most flexible but not normally used for standing rigging.I don't know about your boat, but if you regularly trailer, and frequently coil your rigging, that may account for the use of the more flexible type by Macgregor. the 1x19 is much stiffer and would make a much larger coil. Most riggers would shy away from the 7x19 for rigging.BTW side rigging is commonly called shrouds (uppers, lowers, intermediates, etc); and front and back rigging is normally called stays (head, fore, back, intermediate, baby, etc). Good luckJoe