Having had a Sky package for some time, and then Virgin too, we realised that for the monthly fee we were paying it was not worth keeping either package. It was on looking around after this that we came across Freesat.
After looking at a few models, we decided on the Sagemcom DTR94320S 320 GB. This was partly due to the price, and also that it provided the features we were Interested in the most, this being the ability to pause, record and rewind TV, as well as being able to set up and record an entire series.
Installtion was fast and simple, done so by plugging in to the former Sky dish / cable, then literally letting it search for and store channels.
It provides a good HD picture, and generally works ok.
The main problems we find is that it does literally have a mind of its own. It can sometimes record entirely different programs that you set it up to do, and has even lost recordings entirely.
Overall its resonably priced and saves you money on any monthlt TV package, but can be unreliable sometimes with programming and recording.