Difficult question! They are all very personal and each has a depth of its own, but I would try op.27 no.2 in D flat major and op.48 no.1 in C minor. Also, two of Chopin's most beautiful nocturnes (in all but name) are Lento con gran pressione in E minor and the Barcarolle op.60. // Jason Lee
I think the only nocture, which sheet's say " Lento con gran pressione" is the C sharp minor nocture also on the soundtrack from "The Pianist" . Maybe he is referring to this nocture ?