The is group,
I could believe that comparison of stranded / non stranded and I may test it some day, but the important point here is the size for size issue. I don't think I could do this with the same size stranded wire, I'd have to go down in size to make it work.
I am confident that it is an improvement on 16 gauge stranded which is what I was running and I think my COG will be a fraction lower too.
Most of all however, I would never find out if I don't try and it's really easy to change back.
I'll let you know how it goes.
Chris