I have not heard the Virgo IIs, but I replaced my Magnepan 1.6QRs with the AP Libras and never looked back. I have never heard speakers that throw a bigger and more lifelike soundstage. They are accurate and articulate from top to bottom, and do bass very well. I drive them with Bel Canto Evo 200.2 monos. They might benefit from a subwoofer to get at the really low bass (according to the specs, they go down to 28 hz). I'm waiting for an AP Rhea to come on the market at a good price.
Stereophile did a review in which they compared the Libra to the Virgo.
http://www.stereophile.com/showarchives.cgi?394.