It is just a different look. Neither is better than the other. Both lines are Braided Stainless steel. As someone implied, the only difference is the fitting.
I had them (SBK lines) when I had stock calipers. I took them off and installed spiegler lines when I installed Brembo calipers. Long story why but I would not recommend SBK lines for Brembo Calipers.
Some people say the SBK lines can loosen up and leak but I had them on for 2 years and many track days and never had a problem.\
There is not really anything trick about them and most teams just use regular banjo bolts.