Untitled

Different code depending on computer name. Most efficient process?
$a = hostname
switch ($a)
    {
        "WS001" { $sb = {dir} ; $txt = "Computer name: " + $a  }
        "WS003" { $sb = { get-process } ; $txt = "Computer name: " + $a }

        default { $sb = $null ;  $txt = "This Computer can't run this script"}
    }

if ($sb) { &$sb }
$txt

$a = hostname
switch ($a)
    {
        "WS001" { $sb = {dir} ; $txt = "Computer name: " + $a ; break }
        "WS003" { $sb = { get-process } ; $txt = "Computer name: " + $a; break }

        default { $sb = $null ;  $txt = "This Computer can't run this script"}
    }
...