Never heard of it before...Of course that really doesn't mean anything ...Thats alot of cash for a tuner in my opinion...I love the EPG of my LG unit...Still don't have my 3100a yet so can't compare...I would think them to be the same but I did notice in my research to compare the 3100 & the 3510 that the 3100 does have some things different in the menu/options screens...Does it have DVI or HDMI out oris it limited to component???