Jonny,
If you want to take advantage of Dolby TrueHD & DTS-HD, a receiver like the HTR 6060 or RX-V661 will work fine. Let the A30 do the decoding don't worry about getting a receiver with built-in decoding. It's not necessary. You will have to connect the A30 to the receiver via HDMI or the analog inputs. I'd recommend using the HDMI just for the simplicity unless your into SACD or DVD-A's. If your are, then use the analog inputs. Be aware, that there are some receivers out there that have HDMI for video switching only and will not process audio signals. The one your looking at is fine but be wary if you start looking at other options.