Will you consider active speakers? If for 20K budget, you can buy a pair of Genelec 8040a, which is a good for classical music under 150 squared feet areas given that you are not too demanding.
Bach: Suite for Solo Cello No. 1 in G Major, BWV 1007: I. Prelude
Bach: Violin Concerto No. 2 in E, BWV 1042: I. Allegro
Bach: Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
Bach: Brandenburg Concerto No. 4 in G Major - BWV 1049 - Allegro
Albinoni: Oboe Concerto in D Minor, Op. 9, No. 2: II. Adagio
Debussy: The Girl with the Flaxen Hair
Ravel: Bolero
Copland: The Tender Land: Finale: The Promise of Living