Between what I've tried and another guy I was talking to in MA who was buying a variety of LP ripping chains to compare, the offerings aren't that good aside from Stihl, certainly not in the US. Oregon's LP had super short teeth that wouldn't last too many sharpenings, Woodland Pro has been erratically ground like it was reground crosscut chain (both the stuff I got and the guy from MA got), and Laser is erratically ground Granberg style which is common because the Granberg grind - even from Granberg - is an often erratic regrind of normal chain. The Panther LP I got from the UK - which come to think of it is all I've been using in 36" loops, I've been wrong to say I've been using Archer - has been pretty good, I've been happy with it. I just bought and made new loops with Archer and not even sure if what I have on my 36" bar is one of those new loops or it's a resharpened old Panther chain. So can't say I've tested Archer LP a whole lot yet.