AQ Castle rock is a replacement (just by name!) of AQ Gibraltar which is in sale at half price at MusicDirect! At your budget of $1300, AQ Volcano ~$1100 (discontinued, now named AQ Oak) used one, would be a perfect choice. The only thing is to make sure, AQ Volcano you buy is a genuine one. I have a pair of AQ Volcano as spare (!) to my AQ Meteor and use it in my second system. I had AQ CV-8 (almost like AQ Gibralta) and once swithced to AQ Volcano, I was very happy with more details and well pronounced bass! They are really good...
cheers.
cheers.