Some simple personal questions

To my understanding ( correct me if i am wrong ) If i only want to use Write Once soloution. Then it doesn’t really matter if i choose +/- . Because both have similar compablity %.

But what if i want the best compablity out of the two?? Which one should i choose?

And one two the RW, i personally will only use RW disk with my writer. So it doesn’t really matter to me if +/- have better compabliity then the other.

But which one of them support drag and drop like CD-RW with inCD. Or does both have that function?