Gday Jim
After having a few problems with varivas smp i was put onto Jerry Brown solid spectra and I really liked it. I was able to cast JB 100lb the same distance as varivas GT max in PE8 and only slightly less then the smp, without the line breaking hassles of smp.
The other advantage with the JB is that its a fair bit cheaper. Id say its probably better then Tufline being slightly thinner, smoother and still has great knot strength. I'm currently using it in 130lb, 100lb, 80lb and 65lb. And because it comes in a variety of colours you can colour code your breaking strains if your a bit anal like me.
I have also started converted over to using JB for lighter fishing types from 50lb down to 10lb instead of tuffline ie mackerel and snapper on plastics etc. Don't get me wrong i still like the tufline, just preferring the JB at present.
Hope this helps
regards Tony