Rage,
I usually get down around 250 grams a day and I weigh around 205 lbs. From what I've read, the quantity of protein you consume daily is much more important than the quality. However, that's not to say you're better off choosing soy over egg whites and whey, but be more concerned with just getting down your daily requirements.
I used to overanalyze my protein supplementation...I would look at amino acid profiles, BOV, concentrate vs. isolate, etc. Then I just decided it was more important to eat lots of it and don't worry too much about it.
Most of my daily protein comes comes from a couple whey shakes, tuna, sandwhich meat (lean cuts of ham and turkey), some whole milk, and cottage cheese.
I'm not sure on the amount per meal...there are varying opinions as to how much protein the body can utilize in one meal. As a general rule, I never get down much more than 50 - 60 grams in one meal. I have no scientific basis for this but it just makes common sense that it would be much more anabolic to spread your protein intake evenly throughout the day instead of mass feedings.
Don't know if I answered your question or not but maybe I helped some bro.