I'm a Fluro carbon user, primarily Seaguar, but happy to use Fulling Mill, Hardy Mach, Drennan.
I stick to those few brands.I've learnt to use them and more importantly how to tie knots with them.I don't faff about, I use the same knot for everything- twice through whatever, 5 turns and back through both loops.Lots of spit and S L O W L Y draw it snug and tight.I allways leave a tag end, only small, but its there!.
I'll drop down to 11lb Seaguar on my softest 6 weight switch rod with the smallest flee's- 16's, 1/8" tubes etc- but most of the time its 13.6lb Seaguar on the switch's and 15.4lb Seaguar on the smaller double handers.Bigger Mr's. rod's such as 15's and bigger etc get 19lb and 23lb Seaguar. Obviously thats just a guide, a starter for 10, I'll match the diameter and breaking strain of ANY cast material to the size of flee being used and the conditions its being used under.
I like fluro for its clarity, stiffness and greater breaking strain for a given diameter, I use that greater breaking strain in my favour.
Like any thing else in life, you have to learn how to use it!.
I remember Drennan Double Strength, when that 1st came out, us Coarse and Match lads were all used to Bayer and Maxima, maybe even Fog! (lol!), it was shocking stuff, poor knot strength, awful reputation, but once the learning curve reached a peak its usefulness could be exploited, then I remember the same again with Silstar Match Team too.
Maxima allows us all to take dreadfully liberties at times often blissfully unaware.Fluro takes a bit of learning about thats all.
We all can drive say a Ford Focus to at least a high %age of its capabilities, but a Ferrari or Porker 911, different kettle of fish, or spool of fluro carbon.
After all, remember the hoo haa from the B+W lads when Guideline rods hit the market, awful snappy breaky things!, too light.Maybe opinion has changed over time though,lol! anglers learnt to use them and exploit their capabilities.
I will agree with most on one thing though, bloody overpriced!, but a 50m spool will see me a full season!
As ever the world go's round n round every ones right some times and no ones ever fully wrong.
Chin chin, Pedro.