Silica wick or silica Rope for Protanks?

[JustMe2]

I went to Ebay to buy some silica and see they sell both silica rope wick and silica wick? Is one preferred over the other.

I want to use it for my protanks and evods.

 

[JustMe2]

Heres what I'm talking about if it helps,,,

Silica wick link:
2mm High Quality Silica Wick Temp Res 1600°C 3' to 320' Best Prices | eBay

Silica rope wick link:
3mm High Quality Silica Rope Wick Temp Res 1200°C Perfect for Atty'S | eBay