I used 0.43mm Diamond Araty for leader and baseline and 0.21mm Double X Hi-Abrasion Green for hooklinks for many years. After I stopped competitive angling I used 0.25mm Double X Hi-Abrasion Green for hooklinks because my average size fish was bigger.
Last week I bought myself 0.35mm Silstar for leaders and baseline and 0.25mm Maxima Green for hooklinks. The reason is that I bought myself a Carp Hunter bag from Sensation and the bulky spools of Double X and Diamond Araty don't fit in the bag. I know the tackle shop owner well and he said he uses these two brands (Maxima Green and Silstar). I have used Maxima Green as leaders and a friend of mine used to fish with Silstar competitively until Double X brought out their Hi-Visibility mono.
I use Awa Shima as main line, its thin you can get A lot of line on A small reel and take it deep with your bait boat, I use xx High abrasion for my leader, you get better but its good value for money I'd say.
Awa-Shima C+ Hypercast is our best rated line for competition Bank angling. Especially when distance casting it's our lightest and softest line and has good abrasion resistance but doesn't last as long as Specimen or S-Missile (those are the 2 matt coloured lines - Brown and Hi Vis Yellow)
The 0.20mm makes the 2nd strongest hooklines I've ever made. the only one better is the Alpha Line Bass Pro Clear but we're only getting stock again in December