Klipsch Heresy IV vs. The World!

Trying to balance my audiophile hobby with my marriage. My current system is built around Heresy IVs with Manley electronics. I've heard better speakers but none that offer a similar form factor. The Heresy are about 2 foot tall and blend in nicely with out low slung furniture in our open plan house. I love the sound of the DeVore o/93 and 96 but they are significantly larger/taller. Haven't heard the o/babys. I could add some fast little REL subs to flesh out the Heresy but open to suggestions. Does anyone know of a shorty speaker that offers world class performance? High efficiency a big plus as I love 300b SET. Thanks!