isaak - I assume you're talking about recording, not mixing. It's safer to record vocals with as little EQ, compression and reverb as possible. None, if you can get away with it. You can use all that stuff later in the mix if you need it, but the human voice needs to be as natural as possible in its origin (the recording).
I use no reverb tracking vocals. I used to use EQ, now I don't. I do still use some compression to prevent clipping - audio prophylaxis.