I have now owned this unit for over 18 months, and am very pleased with it.
Very easy to use once you know what all the buttons do, and only one button press to set up a timer recording (a few more presses if you want to extend the recording time, brings up its own little window).
2 channels can be recorded at the same time, and a third can be watch (if on the same mux).
There is a very good forum site (toppy.org.uk) that will answer most (if not all) of any problems you might be unfortunate to get, and that site will also introduce you to things called 'TAPS' which are used to personalise your unit to make it even better.
And with the USB attachment (and a small patch) you can use Digiguide to set up a weeks programs to record, then via a USB lead and a single desktop button press have all the timers (I sometimes have over 40 timers) on your Topfield unit in under 2 minutes.
Picture quality is excellent, including channel 5, and the ability to pause live TV is another bonus (not possible if already recording from both tuners) although the feature I like is being able to watch something while it is recording, a good example of this was the Australian GP last year, I woke up an hour after the program started, set the play from the start of the recording, manage to skip some of the boring bits and the adverts, watch the race (and replayed some of the incidents) and by the time the race had finished I was only 2 minutes behind the actual recording.
Watching a recorded program does not have to be in recorded order (unlike VCR) so you can watch yesterdays recording or last weeks recording in any order.
Price may be a little higher than other models (shop around) but the extra cost is well worth it.
ps. my VCR has not been used for recording since I have had this unit.