I've got a ReplayTV and I LOVE it. I got the 40 hour one which holds 40 hours at "standard quality" which actually looks much better then you would expect, I record normally at "medium" quality which holds I think like 20 hours or. There is a "high quality" mode, which only holds something like 13 hours, but really medium is as good as you'll really need to record. So anyway here is a link to the two models from compUSA
http://www.compusa.com/products/products.asp?N=200446+406558&Ne=400000 . Also whats really cool is you can DL a program called DVArchieve for MAC, or PC and transfer all of your recorded shows from the ReplayTV to your computer to archieve them, and after theit stored on your computer you can delete them from the Replay, and when you want to watch them again stream them from the computer back to the replay over your network and watch them on your TV (if that made any sense). Which brings me to your last question, there is both a phone jack, and an ethernet port in the back, so you can hook it up to your LAN, or even get a wireless adapter for it if you have a wireless network and don't feel like running wires. Any more questions I'de be glad to help.