One of my doctors uses Limelight (and says there are only 2 highly effective machines for IPL, Limelight being one of them) and another one uses Ellipse. Should I base my choice of doctors to do the procedure on the type of IPL equipment he/she uses? I am using IPL to remove capillaries and discoloration. Do you think numbing cream affects the results? Is there a trustworthy website that compares the different brands?