I can add that drill bits are good that keep this widia tip where we still expect it after drilling is finished. Nothing has changed here, unfortunately

I hit my answer right after my friend.
I can honestly write that it all depends on the so-called expectations, because if a colleague is going to fight hard sometimes, it is worth focusing on the quality of proven producers. With very occasional adventures with drilling, chiselling and other construction work - I would also buy cheap, BUT! continuously: being aware of this during operation.
Okay - I read it with understanding and keep writing

It is like buying a set of keys with this and that. Does it pay off or not?
Well, but I already have such keys. Well, but the others will never be of any use to me. Well, when it turns out that the big one can help ...
The colleague himself sees that no one colleague is able to advise one hundred percent on such a matter. I write honestly and I hope that my friend will not hold it against me.