Anyone have an opinion about how they compare. I know the whey factor has a few less grams of protein. It's also GMO free,BSE and rBGH free. I know the grass fed whey by true nutrition is outstanding, but it's always sold out. I have been using they whey factor for years but wanted to try the grass fed whey by true nutrition. Price wise, it's about the same. I can get 4lbs from amazon of they whey factor for 44$. Would love to hear if anyone had an opinion. Thanks bro's...