Mid-Range Receiver with 5.1 --> 7.1 Matrix Sound

[krizzz]

I am in the market for a new receiver and want to get the most out of 5.1 soundtracks. So the matrix feature seems pretty sweet.

I know the Onkyo 705 has it, but I'm not sure if the 706 does. I've also read quite a few posts saying the 706 isn't necessarily an upgrade over the 705.

Any recommendations on a solid mid-range A/V receiver that does Matrix (and all the other expected things like TrueHD, etc.) for about $500? Onkyo is not a requirement. I'm open to any ideas.

Thanks.