I use these. A bit bulkier than most people are used to, but the size is right.
A note about laminating: If the surface gets sufficiently scuffed up, your wet or dry erase marks can become permanent. You might consider covering the wounds section of a laminated card with clear tape, which should be removable from the laminated surface if there are problems. Note: I have never actually tried this, so I don't know how easily removed it really is.