I had the Lite On 451, but returned it for the 107D. While the Lite On seemed to be a good drive, I could not get over the tray eject's hitch. It was also louder than I could tolerate.
The 107D seems to be a very nice drive; it is also well-supported by Pioneer and by the Pioneer-owner community. In addiiton, there are some very nice firmware hacks available. However, it takes FOREVER for the laser to calibrate; this is not trivial and can be truly annoying.
Overall, I would recommend the 107D. Ritek G04 DVD-R media seems to work well with this drive. But I have not tried other media, yet.