Never had any knot problems to be honest baz, though I habitually wet my knots before pulling them tight (hang up from freshwater fishing).

Suffix Titanium a friend has used for Barbel fishing it's WAAAAAAAY under rated break strain, his 15lb wouldn't break until nearer 20lb of pressure.

ebay is outa bounds as far as I'm concerned for buying line, once bit twice shy except I was bit a couple of times lol.

Chears for feedback though.