I have seen some really nice habits in my time as well. I was a candidate of Franciscans of the Holy Land for almost a year and I was a member of the Lay Dominicans as well for a time. Its great to see how the Church lives out her life in different means and manners and the symbols that go along with them.
One that I would add to this list (Just because its older than all the other Orders, including St. Benedict!) is the Monastic movement of St. Columba. His was a white tunic with hood, rope belt, and is thought to have worn a green ‘cappa’, or cloak. The cloak was a typical part of the dress of celtic society and usually went down to the ankles. It was thought to be green because St. Columba was known to have taught green martyrdom, or Glas, which was a complete death to all desire. It is known that this was the necessary habit of the the disciples of Columba because when his disciples, who were on pilgrimage, landed in Wessex and approached King Alfred, they were asked who they were and why they wore the habit they did. The married monks of St. Columba and the other celtic monasteries was written about by the Venerable Bede who found this to be one of the hallmarks of Celtic spirituality, a spirituality that was not just in a monastery, but was a very way of life for all people.