The RX-V1800 is a killer receiver, with lots of features, it will power those Klipsch with ease. If you want upscaling and have a need for more than 2 HDMI inputs, then the 1800 would be a good choice, otherwise I agree that the RX-V663 may be a better, and much less expensive option, as it will upconvert, but not upscale, and sitll has enough power for your speakers, as well as 2 HDMI 1.3a inputs, and will decode all the latest audio formats.