We use brother printers. I used a microscope to prove they mix colors with black toner just to drain color toners when you chose the B&W option.

i have a brother and it works pretty well but i dont have tanks. the cartridges are pretty cheap (like $25 for all the colors+black. it was $100 used back in 2021 and it leaks on the floor so i put paper bags under it. also it like refuses to print yellow idky. never had hp or canon so i cant compare. idk it’s good for taxes lol