Jrunr,
I own the Halcro, and I have heard the S-1000 several times at my local dealer with the same speakers and similar amp to what I have.
To my ears they are very similar both having good bass and fine detail in the mids and highs. I think audibly it is hard to pick a clear winner. I think it will come down to a slight persoanl preference sound-wise.
I think the features will seperate these units more. The Halcro will do HDMI Audio sonner than the Krell. the Krell has some EQ adjustment which can be nice for troublesome rooms.
Costwise is similar. The SSP-80 is the closer match to the S-1000, and the street prices for these are similar.
Regards,
Darrell