This new tippet material from Trouthunter is some of the best performing Fluorocarbon on the market. It may be expensive, but you get 50 meters and extremely strong tippet!!
I have gone exclusively to TroutHunter leaders and tipper, both nylon and fluorocarbon. I have found that TroutHunter tippet has greater breaking strength than other brands, and greater knot security. The half-sizes is much appreciated, as is the 50 meter spools as opposed to the other brands. The slight price difference per meter is well worth it!
Great tippet, but two of my 5 spools just somehow got stripped of all tippet while I was fishing. I noticed the tippet on my 3.5X was starting to unravel, so I tried to wrap it real tight along the edge of the rubber-band type holder, thinking I could jam it back in underneath. That didn't seem to be working too well. Then it started getting tangled up in the 4X. Next thing I know they're both empty. This seems to be a two-fold design flaw with the tippet holder: (1) why does it come out so easily?; and (2) how do you get it back in? I bought this brand because of excellent reviews and a good price. And I can't argue with the quality of the tippet itself -- it seemed quite good. However, if you lose the material you've basically tossed some dollar bills into the stream.
PS I even bought the special Trouthunter tippet holder.
Love this tippet. Like it comes in 50 meter lengths and according to some sites, has a higher break strength.