I shoot both s/s and o/u but prefer the o/u because of the single sight plane. I had poor success with s/s until I learned to shoot better with my over/unders. Many side by sides are extremely barrel heavy in 16 or 12 ga. and then in lighter gauges they can be too light and be whippy. If you choose a s/s make sure you get a chance to bust some clays with it first.