Pferd have been the most consistant for me in my small test sample. I've bought dozen of 5/32 3/16 13/64 7/32 and some single single bevel chisel bit files & ALL we're decent. Actually a dozen is 2x6pack which is good cause you get 6-smooth & 6-coarse. Save edge have been pretty ordinary, not terrible but not great, got I think 3 dozen of them. I've had good Vallorbes both in round & square. But its funny the best raker files I got were from Taiwan I got 2 dozen and they were top notch and pretty cheap. Nicholsen I've had mixed results some good some no so. Oberg were good. I think they can all make bad batches if the hardening process doesn't work out right but I've yet to have a poor Pferd file. I'm cautious and don't buy too many in case their not good but if they are really good you wish you ordered more!lol. All this was important when I'd file everyday after work for an hour+. Now...with a few hundred chains in rotation, I just use the grinder once or twice a week and get em all done. I couldn't believe how bad my hand filing got when I filed a few chains a few months ago & hadn't used a file for near 2 years. Now I'll file a few every couple of weeks just to maintain some skill.