Egg and Whey are the highest in BV, PER and NPU scale. Each type of protein serve a different purpose and digestibility for each individual. Personally, 100% Egg protein would be my first choice.
Here are some helpful links:
Hope this Helps!
Most nutritional research will tell you that Whey Protein Concentrate is the best protein you can consume for muscle building. You can find whey protein in protein bars and whey protein shakes.