There are so many choices in mainline, and you will likely get many answers.
I used Daiwa Sensor in brown for years, it casts lovely, although it needed replacing fairly regularly, often twice a year or more. The brown is softer and more supple than the clear.
On the Sensor clear, it doesn't knot as easily or tidily as the brown, but from a friends experience he said that it stands up to damage and 'overstretch' better than brown.
I would probably have stayed with Sensor if it wasn't for Gardner Pro line. I was given a sample to test before it's release. It has pretty much been on my reels ever since in either light or dark. Every time I get new line, I replace it with the same.