Oh I'm just hard on bits and always in a hurry (always use accelerator on my ACC, etc...) Plus I'm drilling brass a lot. I just don't think there is any brand #80 bit that wouldn't break easily. Like Max says it s great to get sharp bits so don't buy the cheap China sets.
Those cheap sets from China are the worst! You see them all the time at hobby websites and on eBay. I've tried them over the years. Every time, I pitched them all in the trash promptly after trying one or two holes.
Some were so bad that they would actually bend like a paper clip - obviously not even made of hardened drill steel. None of them could drill through metal for beans. Maybe if all you want to do is knock a few holes through styrene or balsa wood, they would work.
I have that same Excel set that Chris has, but at this point, all the bits have been used up and replaced. I just kept the holder so I can keep the sizes neat and handy on my workbench.
