I hope to buy a Tivo HD within the next 2 months as my subscription will run out and I have a lifetime card to use. Can I upgrade the hard drive on my own with a Seagate 500gb drive? Also, looking through Best Buy's website...what is the difference between these two models (both 500 gb, Seagate's, same price too)? http://www.bestbuy.com/site/olspage...agate&lp=7&type=product&cp=1&id=1172880157923 http://www.bestbuy.com/site/olspage...agate&lp=8&type=product&cp=1&id=1172880157783 I hear Seagate are pretty reliable and come with a 5 yr warranty. This sound good?. Putting in a drive shouldn't be all that difficult either, right? Thanks!