Actually guys there is a $499 8ch one from these guys..
http://www.alesis.com/product.php?id=45
I would love nothing more then to see a new REW with 7.1ch setup and measurement capabilities. Esp if the REW gave you a choice of selecting each channel and what medium such as Dolby Digital 5.1/6.1 or DTS 5.1/6.1 so that you can have two presets depending on the type of audio track that is being played..
~Bobby