Fireline crystal is the same as the old fireline fused line.. just a different color. As with all fused line, it is a pain the rump to mess with. Braided is much better, and fireline does offer a braid.. just not in crystal.
I also tried it a few times, never did care for it.
I’ve been using fireline since it first came out. It’s always been a 4 strand braid. The strands are thermally fused, but line is braided. Crystal is garbage because something is wrong with the chemical composition. The process of making it slightly transparent destroyed all abrasion resistance, made it even more difficult to braid than regular fireline and just ruined the line.
Fireline “braid” is just fireline that is braided together well and has more than 4 strands. I don’t know if the strands are thermally fused or not. Regular fireline is not braided together very well and becomes soft and flat over time. It’s braided together about as well as Gorilla braid was.