I bought a 19″ technika with built in DVD and a USB record function. Couple of issues worht mentioning:
Took me a while to get a disk that I can record on – had to partition and reformat my portable HD, but the good thing is the USB slot *will* power a hard drive (as opposed to just using a flash drive like the 4gb one provided which will store about 2 hours). Problem is you need a FAT32 disk and most HDs are NTFS.
The TV guide is completely gash compared to Sky, but then sky are widely regarded as having the best guide
There’s often quite a lag between pressing buttons on the remote and the TV responding.
Other than that, for the money I’m very pleased with it – think I paid £140 or so. It lives in the spare room so I can watch telly and occasionally record stuff to watch when we take it away with us in the caravan
EDIT – I originally bought a 16″ LED telly but as mentioned above it was very directional. took it back and got the money back, replaced it with this one which is much better