Congrats Kray on the great deal and new speakers!
I owned the ES3's for the better part of three years and really loved their sound. Hauntingly magical with high powered tubes (my Rogue Audio Cronus Magnum II. Soundstage, vocal clarity and realism and a very rich sweet presentation that runs that fine line between detail and forgiving like no other speakers can.
With the right setup- sources, amplification, cables and room positioning they can deliver a sound that competes with any speaker regardless of price. Enjoy them and your music!