A suitable scsi controller for a CDROM is about 35 bux max. The extra cost for a CDROM or Burner is like, 50-100 bux. Having the added capabilites alone is worth that little money.
I have a CDRW, CDROM, ZIP, and 2 hard drives. Could I fit all that into IDE? no. Of course, not everyone would have that much, but... why put a limit on yourself.
All my non-hard drive devices run off a single cheap adaptec 50pin internal card Great! Leaves me room to run both hard drives on seperate channels, or have 4 if I want. I can even add more SCSI crap if I want to... Oh, I forgot to mention I have a scanner plugged into the back of my scsi card... 4 uses.
Yea, DMA is "good", SCSI is better (as far as non-hard drive devices). SCSI Hard drives are just beyong economical for home PC's, we all know that. Yea, some of you are going to try to say "but DMA is as good as scsi no a days"... Whatever.
Not trying to be a smart@ss, but I just tire of the "back that up" whinny crap.