......But for maximum 1080p picture quality out of the 103 you must provide the original untouched "native" 720p or 1080i content that corresponds to the HDTV channel you are watching. Ideally, if possible, for maximum picture improvement and user convenience you want to set your FIOS DVR to deliver "native" 720p or 1080i, and NOT TO DO ANY UPCONVERTING in that FIOS box. This "native" setting will simply automatically pass on the untouched 720p or 1080i channel content through the FIOS box and on to the 103 for processing and upconverting to 1080p. You will not have to do anything yourself manually, if "native" is an available setting on the FIOS box.......
....So you do not want to feed 720p that's been upconverted/interlaced to 1080i by the FIOS box, and then feed that faux-1080i to the 103 where it will then get deinterlaced up to 1080p. Results will be very inferior on ESPN and FOX sports programs especially, but similarly inferior on any 720p program.
==> You DO want to use the 103 to upconvert "native" 720p/1080i from FIOS for delivery to the Kuro as 1080p.
Since I've lost track of my childhood secret decoder ring, I had to do a significant amount of internet searching until I found out how to get my Verizon FiOS set top box to send output in "native" format. Gee, who knew that the Verizon boxes had "hidden menus" (not I). Anyhow, now I have the set top sending out untouched "native" content. Can't wait until tomorrow when my 103 gets here and I can set it up to feed my plasma cable content cleanly upconverted to wonderful 1080p. Thanks again for the advice.