Perma Blue - because I love the color :love Don't know how Super Blue looks, havn't used it... Perma gave mine a really nice color to my eye at least...
Dude have you seen they do a paste? It says its the longest lasting finish, but takes the longest to blue up; that could actually be beneficial? Or should I stick with the liquid version??
https://www.amazon.co.uk/Birchwood-...99977585&sr=8-1&keywords=birchwood+perma+blue