I have been very impressed with KBC house brand bits. I bought 2 set of stub length drill bits, a fractional and a letter set. I've been using them for a couple of years and they seem to stand up as well as the Dormer and Cle-line bits I have.
https://www.kbctools.ca/itemdetail/1-050-000
https://www.kbctools.ca/itemdetail/1-052-000
They go on sale occasionally.