CDR-Info has posted an in-depth review of Pioneer's new dual format 8x DVD recordable drive, the DVR-107D. Here's just a small piece of their review:

Pioneer enters the 8x DVD recording market with the new DVR-107D. Being the first 8x DVD burner offering this speed for DVD±R and 4x for DVD±RW, the drive brings the anticipated "balance" in the recording speeds of the +R/RW and the -R/RW formats. With NEC (ND-2500A) and LiteOn (SOHW-812S) as its main competitors in the retail market, the benchmark results of Pioneer DVR-107D would be interesting to most of you.

With no doubt, most awaited features of the new Pioneer DVR-107D are its impressive DVD recording speeds. Although the 8x DVD-R media available in the market is limited, the drive reacted positively to JVC 8x DVD-R and gave us the best recording time for the -R format. Commenting on the DVD-RW's performance; Pioneer recorded at 4x with JVC DVD-RW discs. About the plus format, we achieved the maximum 8x writing speed with 8x Mitsubishi Chemicals media only. Generally, the drive did not allow 8x recording on any 4x DVD±R media. Although this behavior could protect users from creating low quality recordings, some DVD recording enthusiasts could be disappointed. Pioneer will release a new firmware for the drive expanding the supported DVD media list very soon.

But perhaps the most impressive results were the land and pit jitter measurements which were all very low. Coupled with the equally good results in the C1/C2 error measurement tests, it appears to be a high quality CD writer. This could be the reason for Pioneer's choice to support only maximum writing speed of 24x for CD-R, thus preserving writing quality. In case of DVD, the KProbe scannings gave adequate results even for the highest recording speeds.