Hello, I've recently decided to take the plunge and buy a Tivo. I thought about it a couple years ago, and then again last Christmas (bonus check time!) and both times decided against it. I've built a HTPC PVR, but my dear and patient wife doesn't feel comfortable using it as easily as I think she'd use a Tivo. Anyway. I'm 95-100% positive I'll be able to upgrade the storage with no problems, I even have a spare 160gig WD IDE drive in the closet, waiting for a use. But the upgrade may be a few months down the line, depending on the actual use of the Tivo and saved shows. (we have a 2.5 and .5 year old, so children programing will probably find its way on there more than anything if I were to venture a guess right now.) Which should I buy? The 40hour (gig?) model or the 80hour one based on my future desire for an upgrade in HD size? Are the units themselves the same, other than the hard-drive? The model numbers tend to lead me to believe they're identical to each other, save for the larger hard-drive. Do all the new Tivo's available have space to accommodate 2 hard drives, or will it be a replacement of the existing drive? Should I look at buying another "brand" other than the Tivo brand? Input on the lifetime service subscription on a unit that will be upgraded in the future would help too. I'm torn between paying the full $300 for the lifetime, or just forgoing the $150 rebate for the year's service..... As I said, I'm really green here. I think I searched enough of the FAQ's to not duplicate every single question here in those.