Welcome to the Family! You will find that you can get by with very little amplifier power, thanks to the efficiency of your new Klipsch speakers.
I favor Yamaha receivers and surround sound processors. The surround modes seem more lifelike than with other brands, and Yamaha lets you vary the amount and timing of reverb. Be careful, though, many of the newer 6.1 theatre receivers DO NOT have inputs for phonograph, if you still play records. If you're not using this setup for surround, they have some kicking stereo receivers, with full complement of inputs, including phonograph and much better damping factors ( the way the amp controls the speaker cones- related to the 'quality first watt' theory mentioned 3/5/03.
Hope this helps! Don't forget to get Klipsch surrounds when the time comes, any other speaker will not be as efficient so you won't hear the proper sound mix.
Michael - Cornwall mains, RC7 center, YAMAHA 3300 receiver, Definitive BP2 surrounds