^^^In External Segment AVerMedia AVerTV Box7 is the "Best Buy Gold" winner, Digit quote the price Rs.7500/-.
The Best feature in its class,Check the product page
According to digit,The Best TV Signal reception to all of them.
They somewhere said that it beats Internal/USB Segment too...in the field of Signal reception.
But it is too pricy.
This is the only card which support VGA-VGA connection,All other(Digit tested) have VGA-Din (Propwritery Cable), it not an issue though....if VGA-Din cable available in your place or you lost the original one.
One thing you remember you can't record the video/picture into your hdd directly from the card,This is the only drawback of these External cards.