What's y'all favourite weapon and why?

Mines Executioner's Greatsword and irithyll sword

I fell in love with irithyll sword because it looked so frosty too bad I've seen many people say that it's trash but for me I've killed many bosses with it.

Then Executioner Great sword: I wanted to have carthus flame arc or lightning blade spell on my weapon because obviously it didn't work on irithyll sword. Then i started to fall in love with this weapon more than irithyll sword, used if for most of the time and slaughtered many bosses.