Theta Miles bal or Sony Dvps-9000es

Hi to everyone-
Well this is the question. Has anybody heard the difference? I have both but, I'm only using the Theta direct into my Aragon and thought maybe I should sell the Theta and buy a preamp. I love the Theta but could the Sony sound better with newer 24/96 dacs.
Any help or feedback would be great

Thanks Jim
Funny I have both of these units too. To me, in my system there is no comparison. The Theta sounds WAAAAAY better. I have it running into the processor input of an ARC LS 25II then to a VT200(in essence bypassing the pre). I have not tried the Sony into an outboard DAC so I cannot comment, but wouldn't you have to buy a DAC and preamp if you sell the Theta?