"...the best pure burner" for cd-r (verbatim, taiyo yuden, ritek) burned @ 8x/12x/16x and dvd+r (verbatim made in taiwan, india, japan, u.a.e. and maxell xtreme protek mid: maxell 003) burned @ 8x for me are...
LG GSA-H44 / PIONEER DVR-115/215
in the last few years i have had tested a lot of h44n, x15, 7200, x16.
SONY OPTIARC AD7200 / PIONEER DVR-116/216
but the h44n, x15, 7200, x16 are all unavailable, normally.
so, if you can get a new 7200 take 2-3 for the future.