What's your list of banned brands?

What brands do you avoid at all cost? I don't keep up with the news all that much, and many of the reasons to avoid something don't make it there anyway. So I'm asking here to make a big list of things to avoid. It could be anything from bad security practices to really frustrating packaging. Working as a cashier myself, I definitely know there are plenty of brands I avoid purely on the basis that their product is a pain to stock.

On the flip side, what's the alternative? If you avoid Pepsi, for example, what do you turn to instead?