I've had both...
well Had E* till about a year ago.
My opinion is that the E* SD picture was always a bit soft, and quite a bit of pixelation in dark areas. Don't know about E* HD picture though.
I currently have D* and I think the SD picture is much better. Crisp lines and little to no pixelation in dark areas. the HD picture is quite nice, though others would have you believe its crap.
Between the two I'd pick D*