I have had nothing but good experiences with Wolf. Sure its a little dirty, but its cheap, in my guns it has been reliable, and while it doesn't produce the finest accuracy, it works well enough. Now I can see if you have a national match rifle or something of that sort then you might want to put the finest ammo through it. Fair enough, but if you are just looking to dump some decent ammo through your general purpose rifle or SHTF rifle or something of that sort then I say go for it.
That all being said, I understand that a lot of people don't like wolf. They are entitled to that opinion and I am not going to argue. People have had both good and bad experiences with it, I however have had good luck with it in my weapons so I will keep using it. I say get a little, try it out, see what you think. Form your own opinion.
Warner