During my many years of teaching, I have taught students from Alfred, Bastien, Faber & Faber, Piano Pronto, Step by Step, Succeeding at the Piano, SuperSonics, and Thompson. Each of these methods has merits, and I happily teach transfer students from the method they are comfortable with, and supplement additional fun pieces to keep my students motivated.
If given the choice, I suggest my students use Piano Pronto and/or SuperSonics!