PVR - Personal Video Recorder
IMO the supermarkets have no business selling higher-end consumer electronics. Toasters, irons and kettles is fine. But for TVs, PVRs, computers and such you really want a bit of pre-sales advice or post-sales support if there's an issue. The best you can hope for though is some callcentre jockey reading from a script to tell you to switch it off at the mains, then check the cables and the batteries in the remote. After which you end up dragging the bit of tat back to customer services to argue for a refund. That's okay if it broke in the first 12 months, but if it's after 12 months then you might as well bin it.
Everyone has a view product quality and on what they deem an acceptable level of hassle for the price difference. For me, sacrificing a reputable brand for some nameless box isn't worth the £50 saving, and it's certainly not worth the additional hassle and grief if it's going to go wrong and I either end up losing all my recordings, or worse, losing my money when the thing goes to the tip....But that's just me