I managed to get hold of a few graded PVR80s, so I can help out with a few comments if you don't mind me butting in...
Firstly, RGB picture quality is excellent - one of the best freeview pictures I've seen. Also, the 7 day EPG is also excellent, I prefer the layout (similar format to Sky Guide) to any of the other budget boxes, including my own Fusion.
The only downsides to these boxes are no editing facilities, and no twin record - although this can be added with a DIY firmware upgrade. The twin-record firmware has a side-effect that it does slow down the EPG however... Another minor issue is that the timeshift buffer is only activated by pressing pause, it doesn't run continuously - unless you pause for a few seconds then restart.
Apart from these snags, they are an excellent basic freeview recorder. I've seen negative comments about the looks, but personally I think they look fine.
HTH
