Good afternoon fellas. I finally had a chance to try out the RSP chain on my XS 2152 this weekend. I started with a freshly sharpened loop of Oregon 20Lgx (.325" x 0.050" full chisel with no bumpers) and it didn't want to feed at all into the Burr oak I was trying to cut. I then tried it on a red oak log and it cut great. Sooo I swapped on a loop of the RSP chain just for grins, and wow! The combo of the saw and the rsp was nothing short of ridiculous in that tough stuff. It took two tanks to block up both dead trees, and the chain was still cutting great to the end. I hadn't cut Burr Oak at all until this summer when I took down a monster next door.... I didn't notice an issue with that tree, but I was running chain that I had sharpened on the Simington. I'm going to have to see if I can even get the Oregon chain to be in the same ballpark as the RSP with a square grind, but I doubt I can best the rsp. As soon as I have enough funds scraped together, I will go ahead an order a roll of this stuff.