I recommend the Pioneer Elite receivers. The SC series, with the class D3 amps sound fantastic, and have gobs of power. Plus they have Airplay built-in. Kids will live that! I'm very happy with mine. You can buy them new in box on eBay for $1,500 or less. Get the best one you can afford, and it will last for a decade.
Enjoy,
mot
Enjoy,
mot