Right now, my biggest aircraft is the 787-9 lol.
I know some on you like the A380 and 747-8i
Usually I go small. The largest I ever operate was the 747-8 but I retired it after one year because it was too big and replaced it with 777-300ER. It was based on Germany or France, don't remember really.
So what is the biggest a/c you operate?