actually it depends on how your machine was configured. The reason for the Adaptec in my recomendation is that its the baseline. Since all ASPI drivers had originally been based on the Adaptec drivers.
Any other verison will not be standard. So if your CD/DVD rom is expecting those drivers than that is what you will need to be 100% sure your compatible.
You DON'T need ASPI drivers usually, and no, its not only for SCSI, thought that was the origin of it, but... If a program expects ASPI drivers for anyreason, then you should have them, the beuty of the ADAPTEC ones which I am NOT sure is the case of the non standard versions, is that it only should be in memory when you use it. A lot of drivers like to stay resident (ok ok it is an old DOS term but still applicable), regardless of use or need for them. IF you feel comfy with a non standard driver than go for it.
Here is the clincher, remember when I said that you shouldn't need it except if your hardware or software configuration expects it to be there? Well from your previous posts I am assuming that the hardware DOES in fact need it.
On most systems the ASPI drivers are NOT necessary, and maybe they not on yours either, you can just delete the buggers and go from there, but it won't hurt to have them, hence why I recomend in your case specifically to install them. If you feel comfy enough with your system to try and go without it, then by all means do so.
ADDED: I was going to reedit this post since I pretty much said the same thing 3 different ways, but... screw it, I will leave as is. shrugs