For anyone who wants to just change the value of "- Any -" to something in particular then use a custom module to override that looks like this:
function yourmodulename_form_alter(&$form, $form_state, $form_id) {
if($form_state['view']->name == 'your_view_name_here') {
$form['your_dropdown_name']['#options']['All'] = t('- Type -'); // overrides <All> on the dropdown
}
}
The reason you might want to do this is if you have 3 (for example) dropdowns for 3 separate fields. Then having on them wouldn't be very useful for a user (especially if you are not using labels).
In the code above just remember to change "yourmodulename" to the name of your module.
your_view_name_here should be the name of your view (replace dashes with underscores - for example "property-search-bar" would become "property_search_bar")
And change "your_dropdown_name" to the field name - I found this by using dsm($form)
with the devel module installed and enabled. This is usually the field name of your drop down so it might be something like "field_my_custom_value".
Hope this helps anyone who needs it!