i've had it for about 2 months now.
Its a great pvr, very fast and 2 eeks of schedule. DOwn side is that it does rely on your broadband so if you lose that you can't delete things or create new recordings but existing ones will still record etc.
It takes about 5 mins to boot up which isn't bad until it crashes on you, probably done it to me 2-3 times so takes a while to come back up.
the on demand stuff is great though, loads of it and even though i have a crappy speed BB at the moment (only 2 mb and really bad at night) it takes about 3 seconds to buffer and never misses a beat after that, well impressed with part.
I have the normal package, not sure on the cost for all the demand stuff and also pay for the replay stuff which i am going to stop as its free with 4OD on the web anyway so a waste of money.
If you want a free PVR though, its a very good one!