Try cobalt drill bits with lots of oil. (not the brand but made of this material) I think you will find they cut faster and last longer as long as you don't over heat them.
You may also try some of the tool distributors for auto tools, MATCO, MAC, SNAP-ON. . They going to be high, but the tools are top notch. Are you having a problem drilling anything particular, or just want a good quality set? I AM NOT questioning your knowledge by any means, but you may want to look at what your drilling. See if the carbide is the best bit. Also speed and pressure make a diff too. Just friendly FYI.