name='Jackdaw']
There's no problem re the two devices having freeview receivers.
The twin tuner, which you should get, will enable you to watch one and record one, or record two and playback one at the same time.
It should also allow you to watch one and have another one visible in about a quarter of the screen.
If you want the Freeview equivalent of SKY+, in other words the pause live TV option, you need a unit with the Freeview Playback option.
There are other things to consider, such as how you are going to transfer items that you wish to archive from your HDD to another medium, say to DVD or computer hard disk.
If you already have a DVD recorder, you should be able to copy the PVR programmes from its hard disk to a DVD in the normal way via SCART, or to a computer via a cable link.
You could buy a PVR with a DVD drive and transfer archive material over that way, if there is one, of course.