UPDATE: The day the below review (which originally had 2 stars) went live, Reaction Tackle sent me a mssg, to which I responded, and the very next day refunded me for the 15# line that I had bought. Wow!! (And, today I loaded up the 25# version of this line that I had purchased and I think it's gonna do the trick...and if it does, I'll give this a full 5 stars because I love everything else about this line - especially now the stunningly good customer service.)
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Summary (for the 15# line): Color is terrific for murky waters like ponds and lakes!! Easy to see against that. And it casts like a dream - freely, far, and true. However...I'm admittedly no fishing expert, but I've never had line break like this. I bought this to replace the awful, twisty mono that came on my new reel, and was delighted with how it handled versus that swirly junk, but I don't think this 15# line is good for much. First caught a feisty, fighting 4+ pound catfish but line snapped once I finally got him near the dock. Re-rigged, recast and caught a ~1# bass and yet again the line broke.
TL;DR: After decades of always borrowing brother's and uncles' rigs, finally purchased my own during a recent vaca on the lovely SC coast. Learned quickly that the cheap nylon junk that came pre-loaded was too frustrating to manage. So when I got home, I did a bunch of research and decided braid was the way to go. On Amazon, found this as a top seller. Figured I'd never need more than 15# for the random, casual fishing I would do, so ordered this. (Unfortunately I also ordered an extra, larger reel of it bc I was concerned I wouldnt have enough when I got this first smallest reel and saw how slender it was, so now I'm stuck with that bc it is just outside the return window.)
Didn't have opportunity to use it until this past weekend, when I was enthralled with how much nicer it was to cast, and how responsive it was. You truly can feel every little nibble.
But then I caught a fish...a very feisty, fat, fighting fish. I fought with it for a good 3 or 4 minutes but finally got it near the dock where we could see it was a sizable catfish, around 4 or 5 pounds. My companion reached for the line, and it snapped, just a few inches from the fish.
Ok.
So I cut off a couple feet of the line, and started over with fresh rigging. Within minutes, had another fish that I pulled in. When it got close enough to the dock, we could see it was a smallish bass, maybe 1# if that. Tried to pull it up and again the line snapped in two.
So I don't know what this 15# line could possibly be good for. Minnows?
Don 
Jaybee
Johnathan barrett