You may want an inexpensive student flute from a major manufacturer to learn on THEN step up to a good intermediate flute when you can tell them apart.
Here`s a price listing of Armstrong current flutes though, just compare specs:
http://www.kesslermusic.com/html/armstrong.htm
Also check out wwandbw.com and fluteworld.com
Armstrong, Jupiter, Emerson, Gemeinhardt, and Yamaha are all respectable student flute makers.
Goodluck.