SteveC:

ianajmes: Recording seems to be a piece of cake. Not sure what the limit is on channels is but I recorded 3 at once at the touch of one button. The guide flips back 3 days and I would say that to the claim of 90% of programmes being available looks pretty good.

The limit is which channels are you allowed to 'record' from. I don't imagine there will be a limit on simultaneous channels, because all you are doing it flagging the programme on someone's cloud so you can go back and stream it later. Nothing really gets recorded by that box. Other question is how long do you have to watch something after you've flagged it.
Is Prime available to 'record' or watch three day's back?
Thanks for the updates! :-)

@SteveC you are correct, there is no limit on how many channels can be recorded simultaneously as it's all just flags to the cloud recording (but the channel provider does have to have given us the right to make the cloud PVR recording).  Not relying on tuners or hard disk recording has a number of advantages.