I love that there are so many options. You can use a separate line for each method easily. Some of you do. But just remember it should fit your style, you have to find these things out for yourself. That's the fun part. Finding what you like, building confidence.
I can't imagine throwing topwater on braid. To me and the way that I have confidence in topwater it has to be mono. Yeah I'm stuck in the eighties or something. I have used braid on topwater. Even as recently as last year. I like it for WTD baits but I don't use those. I like mono for topwater, crankbaits, spinnerbaits, floating worms (see I'm still stuck in the past). If sensitivity is needed then I'll go to braid or flouro. Or maybe I won't. I'm such a hack these days.