+1 for Festool.
I have the 3 -6.5mm Centrotec set and they are surprisingly good. I also have drill sets from CMT and the best of the Aussie made brands, Sutton Tools, but my go-to set is always the Festool. Apart from the Centrotec convenience, the Festool bits seem to cut more cleanly, more accurately and maintain their sharpness longer.
I have the 3 -6.5mm Centrotec set and they are surprisingly good. I also have drill sets from CMT and the best of the Aussie made brands, Sutton Tools, but my go-to set is always the Festool. Apart from the Centrotec convenience, the Festool bits seem to cut more cleanly, more accurately and maintain their sharpness longer.