There is a piano concerto contest in my town, and I am planning to enter it. I'm of an intermediate level on the piano (though intermediate doesn't really say much). To get more of an idea as to my level, these were the peices that I recently played in a solo piano recital:
Sonata in E minor, Hob. XVI: 34, by Haydn
To Spring (A Lyric piece) by Grieg
Allegro Barbaro, by Bartók
Voiles, by Debussy
Suite de Danzas Criollas, by Alberto Ginastera (a very great piece if you haven't heard of it)
I have no doubt that my teacher will be able to present several options (and would know my current level much better) but still, I'm interested in what you have to say.