Sure there is, if you have a CRT based FP or RP display. HDMI and DVI work very well for digital displays, particularly at their native resolutions, but really don't offer much (if any) benefit for analog CRT displays. And properly calibrated CRT still rules for picture quality.
True, and some dealers will even extend discount pricing on special order items. Of the three authorized DENON dealers in my area, one of them has stated that they will price match Crutchfield.com's price on the 1910 (for the 755S).