Lots of claims are made by manufacturers about tippet materials but how accurate are they?
Back in 2015 Yellowstone Angler performed a range of tests and a wide variety of lines. It was interesting reading then and it still is now. The article can be found by following this link
The best nylon in the test was Stroft GTM. This is an excellent tippet material, but my preference is Stroft ABR. In their review Yellowstone Angler said "The only downsides were their poor spool design and slightly higher average cost than other nylons". I disagree on the cost issue, I think this is really good value for money, especially the 100m spools, but totally agree that the spool design is poor.
The smaller 50m spools are more convenient and easier to carry than the much larger 100m spools but buying the 50m spools is way more expensive. Neigher spool systems interlock which is a pity as I prefer small 100m spools that lock together, but if you only carry one or two spools this may not be an issue.