I'm getting the professional light and planning to use it this evening! I've really enjoyed the RCM, but I've had problems with the color not adhering well to the tips of my fingernails. I wondered if I was positioning my nails under the light improperly. Can any of you comment on this? Also, which nude-ish colors do you like? So far, I only have simply stunning and a few of the much darker colors. Thanks!