this to me looks like a straight section of metallic thread with a 8 axis chevron over it with blue when and then blue. no real fading. Are you just using it for the underwrap?
Blanks are nice but I thought the shipping was getting better compared to a few years ago. Still can be slow if the blanks are not in stock, I ordered some blanks around black friday and they just shipped out.
I don't know if I would really call it a sale because they are always on sale just slightly different promotions.
get the one you like, I think the SW is not as smooth as the other twin powers due to the sealing.
buy the most expensive one you like, if you are like me you will only end up buying it next year anyways.
I have the twinpower fd xd and the certate LT but my certate LT doesn't "click" when I open the bail which I don't like. Very happy with all my twinpowers but I dont have a SW. the older one wasnt as smooth and I don't use the twinpower where it gets really wet.