Nothing special here. Just my thoughts on one type of cutter compared to another. In this video I put a 3/4” two flute high speed steel end mill in my router table to show how well an end mill will cut. The router is set at 10,000 rpm and I make two cuts that are around 3/8” deep. For me the issue is settled. But for you, will it be two flute end mill or spiral up-cut?
-- Doug - Make an effort to live by the slogan "We try harder"