Disclosure: I received the fishing line free in order to give my honest opinion of the quality and value. No other compensation was received.
I am no expert at fishing line however I have broken and cut quite a bit when fishing due to being overall a magnet for snags that being said I have never used braided line before nor have I seen it. When given the opportunity to try out what KastKing had to offer in braided line as I have heard that it's overall stronger than traditional monofilament line.
The one I received is the SuperPower Braid 150YD 20lb at 0.18MM which comes in around 9$ on Amazon. The first thing I noticed was the quality of the braid. With my naked eye I could see no microfibers or potential defects in the braid itself. Also the deep blue color will be a definitely camouflage in the rivers I like to fish.
Above you can see the zoomed in imagine of the line itself. The braid is extremely tight and well crafted. The quality is there definitely. In texture it also has a smooth texture similar to a monofilament line only just rippled enough to feel like silk rather than plastic. Overall, I would say an excellent product for both price and quality.