Haiku is very much a designer looking fan. Try it out yourself at the haiku showroom to get a feel of it. i bought it because of it's reputable brand and of cos.. looks.
The Black L series i bought comes with LED kit and it blends in totally well when it's not in use (you can't even tell there's a light)
Personally, DC fan doesn't offer as much wind as AC fan.
In terms of energy saving.. it's really not much of a difference.