In our practice, we used a fractionated CO2 laser (CO2RE by Candela) for skin resurfacing and have had good success with it. The results are dramatic. I prefer this laser over medium and deep chemical peels since the laser gives a more controlled and reproducible result, at least in my opinion and hands.
The gold standard for laser resurfacing is the CO2 laser. But, it has a downtime of around 7 to 10 days. The erbium has less downtime, but not as good per most surgeons.