There is certainly an abundance of Classical piano literature in print.  Every publisher has a collection of piano classics in their catalog and the differences are determined by several different factors.  When we only include "unedited original works" of the greatest composers it certainly narrows the field. With that being said, the one major difference is content. Favorite Piano Classics from Santorella Publications contains the finest assortment of "unedited original" piano works in print. Let's just let the titles and their fathers speak for themselves;  Avalanche by Stephen Heller. - - Minuet in G, Musette, Bourée in E Minor & Prelude in C by Johann Sebastian Bach. - - Bridal Chorus by Richard Wagner. - - Canon In D by Johann Pachelbel. - - Claire de Lune by Claude Debussy. - - Für Elise, Moonlight Sonata, Theme from Fifth Symphony & Minuet In G by Ludwig van Beethoven. - - Flight Of The Bumble Bee by Nikolai Rimsky-Korsakoff. - - The Happy Farmer & The Wild Horseman by Robert Schumann. - - Marche Militaire by Franz Schubert. - - Menuet a l'Antique by Ignace Jan Paderewski. - - Norwegian Dance by Edvard Grieg. - - Solfeggetto by Carl Phillip Emanuel Bach. - - Rondo alla Turca & Sonata In C by Wolfgang Amadeus Mozart. - - Sonatina Op. 36 No. 1 by Muzio Clementi. - - Spinning Song by Albert Ellmenreich. - - Theme from the Surprise Symphony & Gypsy Rondo by Josef Haydn. - - Trumpet Voluntary by Henry Purcell. - - Valse by Auguste Durand. - - Minute Waltz, Prelude in C Minor, Prelude in E Minor & Waltz in C Sharp Minor by Frederick Chopin. - - Waltz in A Flat Major by Johannes Brahms. - - The Wedding March by Felix Mendelssohn.