I went for a pretty good one - I'll post the type once I get home - it has 3 inputs, with pushbuttons, for DVD, VCR and Satellite, but it also has another 2 buttons for selecting connection type to video and TV (ie straight through to TV, straight through to Video or split - not quite as good a signal, but suitable when you want to watch and record at the same time)

It cost £28 or so