Dutchy and I have "debated" hole saws a number of times, while he swears (in Neitherland speak) by the TCT bladed ones, I could not get satisfactory results and still stick to my bi-unit and this trick... though I have a number of TCT ones... maybe I used the wrong speed, feed rate or any other combo that can affect cut quality. Unfortunately holesaws force a through hole which may not be optimum.
I use that trick also Alex. It's a good one, but for super fast drilling I prefere TCT.
