BT848 vs BT878 TV Tuner Chips

[swrobel]

Can anyone explain to me the difference between these two TV tuner chips? There seems to be no information on them on the internet, it just seems to have disappeared along with Rockwell, the maker of the chips. I'm trying out which chip to buy on a TV tuner card. If anyone could just flat out recommend a TV tuner card (hopefully with the ability to schedule the recording of broadcasts, if anyone knows if that is possible... It's so hard to find good info on TV tuner cards.