I also have a 4900. I have it connected to 3 SD tvs throughout the house via RF cable. It is also connected to a HDTV via s-video and RCA audio. The SD output it produces is much sharper than my 622s SD output. When playing games on interactive, it has faster response time. When I tried connecting the RF cable to the 622s tv2 out , the signal sent to the 3 SD TVs was much poorer. Does a 311 have a better SD output and quicker game response time than a 4900?