.........try the sima svs-4 w/ automatic signal sensing....and or the JVC jx-s300, 4in,3 out,....
or the JVC jx-s700, 7 in, 4out, w very hi bandwith of 12 mghz , which equates to 960 lines of horiz resolution.....which is almost 1080p
on the new digital HDTV scale, that is of course
if u can find a source that will transmit a signal with 900+lines, either now or in the near future........................good luck
billy c
performance a/v