Thanks so much for your recommendation!
I will check with my son's teacher about this edition. Not sure it will be ok if we use a different edition from what the judge required. My son's competitation is USA Open Music Competitation (http://www.usomc.org/wp-content/uploads/2010/12/2012USOMCSyllabus4.pdf). He will play 4 Open Solos which requires specific editions/versions, for example, Bastien Piano, Literature vol. 3 for Fur Elise.