After trying so many strings, I'm convinced that the more you pay, the higher the quality control. Each brand has its own feel, which is what's most important overall.
Sure, the difference between stainless steel, nickel, and flatwound, is mildly audible when performing, but nobody can tell if you use Thomastik or D'Addario strings in the middle of a show. It's all about what feel helps you perform your best.
That said, I prefer Fender bass strings for rounds, and Ernie Ball Group flatwounds. So my opinion may be invalid haha.