i said i have the hauppauge 500mce. it cant really count as it doesnt work correctly. its actually ok for me because i can work around the bugs, but for someone that doesnt want to mess with anything it would be a bad choice.
the hauppauge 1600 isnt a dual-tuner. its a hybrid digital + analog, meaning both cannot be used both simultaneously. you have to use one or the other, and even though there are tricks to allow media center to use both, the hack cripples the program guide's ability to discern what tuner is in use and whats not- not to mention the fact that either way, its only one analog and one digital (no recording two cable shows at once).
what we really need is a quad-tuner pci card. two DTV tuners and two ANALOG tuners. that way we could use regular cable with a rooftop antenna, and never really worry about scheduling conflicts or times in situations where recording a show inhibits the ability to watch any other desired channel.