I use them all and each one for it's unique characteristics. Braid for it's limpness, low stretch, sensitivity, and high pound test/diameter. Mono for it's stretch and relative low visibility. Fluorocarbon for it's low visibility, stretch, sensitivity, and high density.
Braid in 10#, 14#, 20#, 30#, 40#, 50#, 65#, 80#
Mono in 4#, 6#, 8#, 10#, 12#, 16#, 17#, 20#
Fluorocarbon in 6#, 8#, 10#, 14#, 17#, 20#
All types and conbinations on both spinning and baitcasting gear depending on the presentation.