Hi there. I have a topfield PVR, i have not found the fan to be too noisy, but it is in a cabinet, not sure how much difference that would have made.
I have found that the name coming up as the saved name depends on how I set the program to record, if I use the built in guide and press record on each show in the list that I want to record, they generally are saved with the right name, but if I press the record button when on the channel, sometimes the name is not right. I am in the habit of always recording the following show as well, to make sure I dont miss an ending (shows have a terrible habit of running over now, don't you think?).
I hope that makes sense to you, lol.
I have not had any other PVR, so can't help you with comparing them, sorry.