I always migrate stitches. For me, it eliminates ladders. If i start with 5 sts on 4 needles, at the end of the round I may have 4, 6, 7, 3. The next round I will have a different count. This is intentional. My only concern is to not lose the first stitch marker.
My first attempt with dpns was with aluminum needles and they kept slipping out. I never had any problems after switching to wood, which have more friction.