Fine as long as the show isn't flagged for copy protection. Since Comcast flags just about anything HD, MRV is pretty much useless for me
The Elite has streaming that does not had the "don't copy" issue, and there is talk of it migrating down to the Premiere - if so, the problem will be solved.
If MRV is a big deal to you and your cable operator is liberal with the don't copy bit, the feature might as well not exist.
Depends on your network. Wired is DEFINITELY better than WiFi here.
Depends on your network. You might get wifi to work, but I wouldn't rely on it.
Streaming. It's only in the Elite - so far.
My Tivo's have never sped up. Only slowed down with each update
Netflix is better on just about every other device I own (Second gen Apple TV, Xbox 360, PS3). The PS3 is my favorite - I like the bluetooth remote the best of all the other devices and I also have at BT keyboard attached which makes it trivial to search. Tivo's Netflix app is slow, laggy, and quality is definitely not there.
If your internal network is all hardwired, you should be good to go. Wifi is the cause of most people's problems, whether they want to admit it or not.