IMO, the GTX-1 might be a little buggy but not dated. From the reviews I have read and the GTX-1 owners I have spoken to, it exceeds the Chiro, Sony and definitely the Sherwood which doesn't even offer auto switching for surround modes. Didn't it just come out in '99? Anyway both Solo Electronics (GTX-1) and Kinergetics (Chiro) are belly up now so there is no support for these units. Jeff