Joined: Jan 2009
Posts: 44,128
Likes: 6,348
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
This thread shows that the various designs suit different kinds of needs. There's a light for everyone, and there's a reason for each design, including self-contained, cheap clone, dynamo, and whatever else.