First off, I like really limp lines, mono and braid, Sufix Siege and Daiwa Samurai to be more precise.
I had 17 lb Siege on my swimbait setup. I spooled mono because I wanted to fish both bottom bouncers and topwaters on the same setup. It worked for me for a while, although I lost a few hudds and a couple of Mattlures. I fish swimbaits in a very rocky lake. Very abrasion resistant for a mono, and very strong (I once pulled out a 7 feet tree stump with a hudd, and bent out hooks on two baits), at the end of the day, the leading few feet of the line would be rough to the touch. Not fraying, but just rough.
On Randall's advice, I switched to fluoro. Not because I lost confidence in my Siege, but I wanted to play safe. I figured that the water is still cold, and I throw soft baits 90% of the time anyway. The last 2 swimbait trips, my Curado 301E was spooled with 20 lb Spiderwire Ultracast FC, which has the same stated diameter as the 17 lb Siege. The revelations? Initially, out of the box, I found the Ultracast to be very stiff. Remember, I like limp lines. A bit of KVD L&L took care of that. Now it's still stiff compared to mono, but not to the extent that I'd absolutely not fish with it. I need way more thumbing on casts, but still get great casting distance. The plus points? The rocks didn't even scratch the line at the end of an 8 hour day. I'm in contact with the bait, always. I had the same feeling when I was using Siege, but it's like 10 times magnified now. And I haven't lost a single bait to snags the last 2 trips. (I haven't caught any bass either, but that's another matter )
I hate the Spiderwire braids, and I never tried their monos. But IMO they have a winner in their fluorocarbon line. My finesse setup used to be rigged with 6 lb Ultracast FC (now it's Samurai + leader). I settled on Ultracast FC for a while after trying a bunch of FCs, including Invizx. Not ultra-manageable like Invizx, but not uber-stretchy either. Just the right combination of sensitivity and manageability, for me anyway. When I was looking for a FC for my swimbait reel, I tried Ultracast FC first, I haven't been disappointed.
P.S. I'm not sponsored by anyone, including Spiderwire, in any way. I don't see too much love for my favorite FC on the forum, and I thought I'd share my recent findings.