If you get an AS receiver make sure you do the measurements in a 8 position grid around the primary listening area. If you'd like some help let me know I've done AS(Auddysey) calibration successfully numerous times.
Selecting a receiver is simple. Just get one with the features you want and move on. Most amps handle 4 ohm speakers just fine. If you have a problem(very unlikely) just let us know.
I buy receivers purely on looks/features.
All I need is HDMI repeating and Pre-amp outs.
So I got the cheapest receiver that has both. The HK AVR 247. It works just fine for me and only cost 200 bucks. That's how simple getting a receiver is. Spend your time on the speakers not the receiver. :bigsmile: