I tried SuSe (came with q3a, I was bored), it didn't detect my promise controller or any of the drives attached to it. I don't think I missed a place to feed it a driver either, so if you have one of those, you may want to avoid it.
For mandrake, only the first two CDs are nessecary, the 3rd cd is all documentation. Actually, only the first CD is required, the second one is just more apps, so I reccomend it.