What are the reasons that a patient or a doctor would use the Allegretto Wave over the VISX w/customvue? The Allegretto reports that 87% of patients see 20/20 one year after surgery and VISX S4 Customvue reports that 98% of patients see 20/20 one year after surgery. There must be a reason since many top docs have chosen Allegretto. The "top" doctor in my area (highest volume, best marketing) uses Allegretto but there are a few great doctors in the area with tons of experience that use the VISX w/customvue. Also, my pupils dilate to 7.5mm and 7.6mm in low light. Allegretto is 4.5mm-8.0mm optical and VISX is 6 with a transition to 9mm. Is the ablation zone large enough to reduce the chances of night halos for me? Does that mean one is better for Halos? Allegretto doesn’t use wavefront and customvue does? Is it not important? Why would a top doc get a laser that doesn’t have wavefront? Does the optical zone have to be larger than my pupil size or does the "transition zone" count? Please help. Thanks.