I know there are some pretty good Humax machines but they need to be net-workable (I have networked mine using a Buffalo network HD but it is still basically USB between the PVR and the hard disk).
I love the Toppy but they don't seem to be able to stay alive for a full 12 months and they are not cheap. The last was replaced (eventually) free of charge because it was within warranty but I'm not sure the replacement starts again from scratch or whether it is covered by the original warranty.
Before going down this route it would be nice to see what else is out there...







I suppose a card-in-a-computer option isn't what you want? We had an eyeTV PVR box for our Mac which isn't quite the same thing as standalone box. It's a shame Tivo never made a dent in the UK market.