I don’t care what the power head, 100% K-Drill for me. I can switch it from Milwaukee driver drill to Ion, to Strikemaster 3hp Solo with the use of the Univers-all adapter. The shaver blades are too thempermental for me. I sold my Laser drill bit, and the old style 6″ Ion bit that came with it just sits around as a backup in case of emergency.
CRC – my only concern with your setups is the lack of ability to use a hand powered option.