Howdy fella's,
A good friend just purchased himself a Cayin a50t Integrated Amp pumping out 16W Tri or 35W Ultra. He's looking to spend $1K on a fairly efficient pair of bookshelfs. Since I don't really have any experince with any of the Klipsch bookshelf speakers I'm yielding to your suggestions
Amp: http://www.soundstagedirect.com/cayin-a-50t-tube-integrated-amp-audio-equipment.shtml
Much Garcias