Just got a set of these and thought I’d post here. Yes, they’re expensive, but I was at the end of my rope dealing with having to apply “tons” of pressure on my drill press to get my old bits to work, albeit not that great. To me, they don’t look all that different from my old set, however they sure do work great. Now it’s like drilling any other hole using moderate pressure with increased control. The resulting hole has very smooth sides and is very clean.
First pic is the old bit…