Best Option for HD OTA?

Looks like we will finally be dumping the warhorse CRT getting an HDTV for Christmas. I am a cord cutter currently rolling with a lifetime Series 2 and a digital tuner.



I assume this setup would be pretty horrible output on an HDTV?



My plan is to obtain a lifetime TIVO on Ebay, just wondering what the best option model-wise would be for an OTA only setup.



Also, looks like most of the HD boxes come with dual tuners. I assume I can record 2 shows at once with OTA?



Thanks!