most of the flutes in my band have armstrongs, i think they're pretty good. i have an artley tho... umm make sure u get ur embochure right from the beginning or u'll get used to the wrong way. that happened with me. it sux.
I would find a teacher to teach you the correct embouchure before you teach yourself something and it starts to become a bad habit. I would suggest getting Taffanel and Gabuerts 17 BIG DAILY FINGER EXERCISES FOR FLUTE. and/or. The complete daily exercises for the flute by trevor wye. Yes, i know that some flutist don't like to start their young ones with this, but i started with them both when i started at an early age and it has been very beneficial to me.