The broadcast (in other words, delivery of digital media) may have technical similarities or like you say, same family. Nevertheless, its the end result that shows some difference for better or worse very dependent on the set top box electronics which may have limitations.
The Astro box is outdated and been around for so long as far as anyone can remember, offering only analog outputs or S-Video at best, no HDMI or Component output unless upgrade to Beyond package. I think DVB-S require a dish and LNB (much like the common Astro Dish) but DVB-T can work with a UHF indoor or outdoor antenna. Its critical that the UHF antenna is designed to cover the UHF frequency band required by DVB-T, thus simplifying simpler and possibly cheaper setup. LNB's and dish are NOT cheap in practice.
So there you have it, I see superior PQ in this DTV trial run so far. Not the very best but worthwhile and its free, provided your TV is DTV capable. I'm still looking around for a proper antenna, and pondering about problem of poor signal strength in my area.
I suppose, the TV to lookout for these days is a fully integrated TV with DTV, Analog TV, Internet/Network capable, Bluetooth ready, Wifi ready, USB Media Player all rolled into one for full potential. Have I left out anything? Don't tell me Windows 7 incorporated... This post has been edited by bsl555: Jun 22 2011, 02:29 PM