I'm doing my best to justify the initial hardware costs of a Tivo instead of paying money to the Comcast Mafia, with subscription costs, they'll likely cost about the same for two (12.99 x2 for tivo or (16.95+9.95 for comcast)), so the question comes down to is the hardware worth it for me, so maybe someone can help answer these questions: 1) I cannot find a huge difference between the Premiere and XL aside from HDD size and THX certification. I'm buying a really nice Panasonic 60" plasma, so I'm wondering if the THX thing is a deal breaker. Any other major differences to know? 2) Are hard drives still user replaceable and upgradable? 3) Are the lifetime subscriptions only good for the life of that box? Aka, if it dies a year into it, am I screwed? What about transferability with upgrades? 4)I'm assuming the only things that really breaks on these are the hard drives, is that the case? 5)What's the deal with the networking, how can this thing be sold without wifi built in in 2012. Any other possibilities on wifi adapters for better prices? 6) Trying to justify the pricing, I'm thinking of a refurb regular premier for my bedroom and a Premier XL for the living room, once I add in wifi adapters, that's still $350-375 up front, and then the subscription charges. I've never used a tivo, I've had great luck with the fios DVR service, but I'm being forced into comcast with an upcoming move. Please, someone talk me into this. If this is the wrong landing spot for this post, please move or ask me to move. Thanks!