I've used a variety of Lakeshore Carbide 0.5" end mills, but I'm not sure sure I've used that exact end mill. I tried a Shars ZrN high helix end mill on a whim one time and haven't looked back. I happened to be recording a video the first time I used one so I'll post the link below. These end mills aren't cheap either, but since Shars sells so many items you might "save" a little by throwing them in with another order. They leave a phenomenal finish on the floor. I attribute the performance gain on the helix mostly, but I suppose it's also possible that Shars has some kind of fancy grinding ability. 0.125 is a hell of a radius, too much for what I am usually doing, but that's just me.

Oh, I was using a Novakon Torus Pro at the time, but I figure it's similar enough to the PCNC1100 that you can expect similar results.

Link to the Shars mill: 1/2 SE 3 Flute Radius 0.040 45 Helix ZIRCONIUM NITRIDE Solid Carbide End Mill For Aluminum - End Mills - Cutting Tool - Products

https://www.youtube.com/watch?v=CyNkCqthtog