Oh alright, I guess I'll chime in and throw something under the bus. For me, it would have to be the AV123 (Onix) Reference 1 and 1.5 (tower version).
They were a treat to look at, but not much of a treat to listen to.
Call it synergy, call it personal taste, call it whatever - but I could never get these speakers to work for me. No matter how hard I tried or what gear I attached them on, I always encountered thick bass, an unrefined top end, and hollow mids. After three weeks, I decided that enough was enough. Back to Colorado they went. I'm not sure how they earned the praise that they received.