I use an editor that :
1. Converts tab to spaces on save (tabstop set to 2 == company standard)
2. Tab indents by one tabstop
3. Shift-tab outdents one tabstop.
4. Auto-indent is ON for <current language>

That's all you need, ever, no hard tabs.
IMHO, any editor that doesn't/can't do that is broken.
I often have code that is indented 8 levels and a line length of 150 chars total. Giving 8*8=64 chars to indent, rather than 8*2=16 seems crazy and would annoy me all day, every day. Edit: I also like aligning, particularly =, and/or, hash assignments and arguments, again using spaces for all for these. That's for eye appeal as much as readability.

  my $short  = 5;
  my $longer = 6;

  my $wheels = {
    unicycle => 1,
    bike     => 2,
    car      => 4,
  };

  if ( $a          == 3    and
       $long_name  == 4567 and
       $is_tuesday
  ) {
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