I use this one myself though didn't get it from that particular site and find it fine. In saying that it's the only brush I've ever used so can't compare it to others, but it works well regardless.
Vulfix 404
When Iyou buy a Merkur, does it come with cleaning instructions?
Don't think so. Why would you need them anyway , iirc stainless steel is pretty hard to stain and rust.
I have noticed my second blade doesnt seem as sharp as my first, It felt a lot less smooth/close and was pulling a tad.
Whats the deal with the numbers on derby blades? is there a specific way up i should have them.
Really? I have to shave twice a day to keep smooth. My stubble grows super fast but there's not a lot of it, it's just the circle, nothing on the side burns.