Summary: The setup took forever first because nothing on the outside of the box said anything about needed a Wireless G USB adapter. I couldn't find one locally so I had to order one online - for another $25 with shipping. I have an outdoor antenna but TiVo wouldn't work with it. I found out the antenna had to be a digital antenna so I had to go buy one. I followed the TiVo setup instructions exactly but could not get it to work. In TiVo's defense their chatline was excellent.
Summary: I've been a Tivo customer for seven years and just retire my Series 2 DVR. I upgraded to two Premier boxes. Each box contains the Comcast multi stream card and a wireless N adapter. I had to update the router in our house with a wireless N. If you want to stream HDTV, you need wireless N because of the bandwidth required for HD.
Summary: I bought this new Tivo because it had more recording time than my old one. It has an updated interface that took me a couple of days to get used to. I like being able to record more shows in HD. It also has a few extra features that my old Tivo didn't have. So far, it is a great addition to my home theater set up.
Summary: I actually own an older Tivo which can burn recorded content to DVD. My older Tivo does not handle HD so I am strongly considering purchasing this unit. I won't be able to burn DVD's but the storage is large enough to store a lot of HD content. I just wanted to comment in response to someone who suggested renting the cable company DVR. That's well and good if you never record anything you want to keep.