This is one of the most asked questions from new breeders, whether it is better to mate tufted to tufted or tufted to clean-faced birds. According to classic genetics, crossing tufted with clean-faced will give you 50% tufted and 50% clean-faced, with none dead in-shell. This cross will give you the greatest number of live chicks. If your goal is to produce the largest percentage of tufted birds and minimize the percentage of undesired clean-faced chicks, then tufted to tufted matings are best. In this case, 50% will still be tufted, 25% will be clean-faced, and 25% will die in-shell because they have two copies of the tufts gene. So even though the percentage of birds that hatch will be 75% tufted and 25% clean-faced. In both cases, you will get the same number of tufted chicks.
I am one of the breeders who uses both, I consider all of the traits I'm working on at that time.....not just to get tufts. It's true that it's the standard but tufts don't make them champions, there are a number of traits that must be correct so a clean faced, otherwise excellent individual is, IMHO, too valuable to waste. You want the total package to be correct. Too many breeders can't get past the tufts. If you can produce the best that are clean faced, then adding tufts (without managing to mess up other traits) will complete the perfect Araucana.