I've had a Panasonic E30 for about a year now and haven't used my VCR since. As someone has mentioned before it uses DVD RAM discs (expensive) that can be recorded on many times and DVD-R (cheap) that can only be recorded on once. I very rarely record things permanently to play on other peoples DVD players, but when I have, the DVD-Rs have played faultlessly on other players. I tend to use the DVD-RAM all the time and just erase something when I've watched it and record over again. One particularly useful function is the ability to either play something from the disc while recording something else and to be able to watch something from the beginning before it has finished recording and pause the play as you are doing it, just like the hard disc recorders (which I think are definitely the way to go).
One word of warning - the marketing for this device says "can record up to 12 hrs on one disc". This is by using a double sided disc and using the 6 hrs record mode, which is virtually unwatchable, and then manually turning it over. I use the 4hr mode most of the time which is comparable in quality to the long play mode of a good quality VCR, and use the 2hr mode where I want better quality of sound and picture.
One other idea, if you can stand the cost, is to get SKY+ and a DVD player which would give you even more facilities. A good player can be had for under £100 and SKY+ is coming down in price in Oct and an update to allow recording 2 programs on the hard disk at the same time is imminent.
Cheers
Andy