Fishing line....

[zippyFX]

I use braid on most of my rods for three reasons (i) I can get a higher poundage of line which keeps me from loosing lures and terminal tackle; also the smaller diameter gives better casts (ii) more sensitivity as there is no stretch and (iii) the line can be used for many seasons without significant degradation.

If amount of line is not an issue you can add more mono backing and use less braid. I have had issues with the abrasion resistance of braid (many different brands) and will use fluro/mono leaders when still fishing in rocky areas for catfish and bottom feeders.

It's a bit like buying an LED bulb; you pay up front and get returns later.

That being said most of UL reels are spooled directly with 4-6 lb Fluoro. I have one small reel that could not deal with the stiffness of fluro so i spooled with very supple mono.