The Humax is a long-time favourite of ours, but i'd also strongly recommend the TVonics DVR-150 (which has a 160GB drive) or its big-brother DVR-250 (250GB).
More details at the TVonics website
If you're not desparate to buy right now, we're also running a test of PVRs in the October issue, which comes out August 23rd. Within that test, we'll also be reviewing the Wharfedale-branded version of the TVonics DVR-250, which is set to be an Argos exclusive when the new catalogue comes out.
Clare Newsome is Editor-in-Chief of What Hi-fi? Sound and Vision