DVD Recorders, Video Recorders
* Twin tuner - Typically allows you to record one digital channel whilst watching another digital channel.
* EPG - Electronic Programme Guide (an on-screen TV listings service for easy selection of shows to record) - Look for something with at least a 7 day EPG
* Disk size - PVRs have different sized hard-disks. If you're likely to record and store a lot of shows, consider a box with a larger drive
* Series Link - Set-and-forget option to mark a favourite show to record future episodes in sequence on the same channel