I have the Calibre XD’S and am really happy. I bought the passive version originally and was running them with a Rogue Cronus Magnum. At 90.5 db and 100 wpc they sounded really good, but Bill Dudelston told me they liked a lot of power and said they would have a lot more/better bass and presence with the XD amps. I took his advice and man was he right. I upgraded them to XD’S and have the bass powered by the 750 wpc ICE amps and the mids/highs by the Rogue. Very impressive presence, slam, air and and soundstage. I listen to a lot of jazz and they really do a great job with that genre. If you want to rock out they can with authority. Drawbacks? Sure, I have to take some metal candleholders off the walls because they rattle too much when I crank the Calibres and my wife has accused me of violating her noise ordinance a few times. I had a guy do a master set with them and it did wonders for the imaging and soundstage. They sound spacious and smooth at moderate volumes as well. Future plans are a Wavelet and if possible, Aeris or Focus XD in a few years.
I’m a Legacy fan.