Which spec?.. I am sorry to ask such this disturbing question but I have no idea about it, truly.

I've tried searching for information within and outside this forum..and what I have seen is recommendation on following external dvd writers:

- -LITE-ON SOHW-1693SX (16X8X4X/16X6X4x/16X/+48X24X48X DVD-Dual Drive)
- -Sony DRX-710UL External Dual Layer DVD±RW Writer
- -Pioneer DVR-R100
- -LG - GSA-5169D

any comment on these in particular?
Or, still, any recommendation on other brands?