Tabs vs Spaces

The debate about using tabs or spaces for indenting code. Which to use?

Tabs.

This is, after all, pretty much what tabs were invented for. On top of that using spaces have the following problems:

The only decent argument I heard against tabs is that they're often too large (such as equivalent to 8 spaces). My response to this: I never realised we were meant to cater to Notepad users! Seriously, do you just not know how to adjust the tab display size in your editor?

As for the even more important debate about many spaces a tab should be:

Four.

That is all.