Where can I find a really good dual Freeview receiver with harddisk rec?

I want to buy a Freeview Set Top Box with dual tuner and hard disk recorder. I'm told they exist, but I am having trouble finding one.

I would want 2 tuners, so that I could watch one programme and record another. I've heard that different boxes use different listings guides to "know" the schedules. (I don't know what difference this makes. BBC is best as they keep their schedule data up-to-date I have been told.)

Anyone know of a suitable product?