Hauppauge WinTV-NOVA-S PCI
The WinTV-Nova brand name was established by Hauppauge to designate their new product line of decoder-less devices (which were considerably less expensive then their original "full-featured" line of devices). Over the years several revisions were released. All are based on the Philips SAA7146 PCI bridge, most used STV0299 demodulators, either in Alps BSRU6 or Philips SU1278 tuner modules.
All of them are well-supported. Due to the limitations of the quite oldfashioned hardware there may exist some quirks when using many cards in a system or when you need to access Transponders with very low Symbol Rates.
In most systems and for average users these cards work satisfactorily, the Linux drivers are well-tested and robust.
There is also a WinTV-NOVA-S-Plus (Model 794) which is supported since Novmeber 2005.