Tabs VS Spaces

Which do you prefer in your code?
Personally I like tabs more but they're misused for formatting instead of indentation by many which is annoying and kind of defeats the purpose.

I use python and vim with 'set list' (shows special characters such as tabs) and tab-size set to 7. Thus if I indent, say, a line with 'if something:' by seven spaces and the next lines with the if-block contents by one tab, python understands the indentation (since it thinks tab is 8 spaces), while I have nicely aligned code with dark blue '>' characters (set by 'listchars') showing me which code is 'indented'.