After tons of reading here and asking some questions the burners I've ordered:
2x NEC/Optiarc 7201-S SATA drives (DVD burners)
1x Samsung SH-S203N SATA drive (CD-R burner)
1x Samsung SH-S202N IDE drive (CD-R burner)
The question is what other ones to get?
1x NEC/Optiarc 7201-A IDE (DVD burner)
1x LG GH20NS15 IDE (CD-R burner)
and maybe another SH-S202N to have around for a spare.
I have my BenQ 1620 to scan with and a Pioneer 111D