What Piano Piece Should I Learn Next ?

I have been playing the piano for 4/5 years now. I am grade 5 piano (for those peeps in Britain who no wat I mean). I have been playing Nefeli and Le Onde by Einaudi recently and I would like to play something else like those. I would like something around my level of playing. Oh, I can already play Bellas Lullaby so dont say that please!!!