I got a refurbished unit almost a year ago for a good price. I was very satisfied with the purchase.
I mostly use it as a DVR (with DVD-RAM disks) and watch DivX movies on it ocasionally. Both of the features work great. I was pleased how clean and easy to use the menu system is (compared to my previous DVD player). I also liked the remote a lot. Every feature I tried worked well, no glitches or substandard quality. The recording quality is great, and I was even able to watch the recordings on a DVD-RAM disk on a PC. I also liked the time-shift mode, when you can watch the file you are recording and skip comercials, etc.
If there isn't anything wrong with the unit there is only a few things I could wish for. First of all, the interface is rather slow. Not a big issue if you are planning to use it as a DVD player/recorder, but I also planned to use it as my main TV tuner to watch TV programs. Unfortunately, it can take up to a minute, or more for it to start up (especialy if there is a disk inside) and during that time you can't watch TV programs at all. Also, it takes about half a second to switch between channels. Again, not a big issue, but can get annoying when flipping through the channels.
One of the features I miss a lot is a USB port for flash drives. Also, it doesn't let you watch movies from SD cards, just pictures (and maybe play mp3s, not sure though). I have to burn my DivX movies on CDs in order to watch them.
Also, the small cooling fan on the back of the unit is quite audible when it is on (which is almost always). I think cooling the unit could have been done better (quieter).
Now to the issues I had with my particular unit. After several month of rather light use it started having problems reading (and recording) DVD disks. The issue was worst with DVD-RAM disks, it would some times not recognize a perfectly good disk at all, and the issue was getting worse over time. Since my warranty was long gone, I decided to open the unit up. The DVD drive in it is very similar to a typical IDE drive you can find in a PC (the mountings are a little different and there is no face plate). So I just replced the drive with a DVD-RAM burner from my PC and, amazingly, everything worked perfectly (even though it was a NEC drive, not LG). All features worked fine, the problems were gone and it even got somewhat faster (although, a bit noisier). The noise is not an issue, though, it only spins up during start up. During playback and recording it is still very quiet.