Welcome! Are you looking for a Snow or Leucistic? Both are white, and both can have clear nails, but only Leucistics have to have clear nails to be called "Leucistic". Snow's can be a variety of whites with blue hues to the undertones or blue side bars... Typically it's hard to tell a nice Snow and Leucistic apart, but their are subtle genetic differences.
If you contact Lynn at
http://carolinadesignerdragons.com and tell her Anthony from Annapolis Bearded Dragons sent you she can hook you up with a really nice Leucistic male or female... This past year she has produced the whitest dragons hands down, and if for some reasons he's all sold out my friend Jeff at
http://www.jdmdragons.com will have some Leucistics later this year. Jeff provided me with my killer Leucistic male "Spike".
Regardless of which breeder you pick up your next "White" dragon from you will be blown away, as they have some top notch offspring!
Take care, and I hope this helps!
Anthony