About 4 or 5 months ago, I bought a pair of BeoLab Penta Mk3's on a whim for $400. The aluminum is a little beat up and the midrange foam was trashed. At first I wasnt so sure if they would be any good. I was told B&O is a designer speaker company that isnt for audiophiles. But I saw the list price of $3-4k and that it was the flagship model at one point. I brought them home, hooked 'em up to my Yamaha receiver and listened. My initial impression was good bass and highs but midrange was muddy and distorted. I knew the mids had to be refoamed, so I orderd up the kit and did the job. The refoam made a HUGE difference. My first thought was "wow, this is high-end sound". The bass was smooth and the impact from drums was very realistic. The midrange is thin and delicate yet detailed sounding, and the voicing is a little on the warm side. The highs are very well balanced like the bass. Not harsh at all, pretty accurate. A little roll off at the very top end, but still very sweet and smooth sounding. The imaging and soundstage are fantastic and helps with picking out individual instruments. The power response is crazy. You can sit anywhere in the room and the sound wont change very much at all. 

Anyways, these arent the most accurate speakers Ive heard. But they are extremely enjoyable to listen to and now Im officially addicted to them.