Thank you for your question, Port Wine Stains respond very well to both Excel V and VBeam laser treatments. The lasers will lighten the stain after multiple treatments, but the difference for some patients would be based on the pigment of the Port Wine Stain, immediate post effects, healing time and tolerance of treatment. VBeam promotes bruising immediately post treatment, there's some discomfort during the procedure for some patients and scabbing can be expected over a few weeks. Excel V will cause dusking of the stain immediately post treatment, some patients voice discomfort and possible scabbing can be expected over a few days. Based on patient feedback both treatments are well tolerated. Discuss with your specialist the benefits of the two lasers, if you've had successful treatments so far then continuing with the VBeam laser would be a good option. If nothing has changed then trying the Excel V laser could be beneficial. Discuss with your specialist if you would be a candidate for the Excel V and review the risks and side effects for your skin type. I hope this helps. Regards, Sheetal Sapra, MD, FRCPC