1)That Rav Dovid Feinstein holds in his father’s name that it is permissible to eat chalav stam even where chalav yisrael is readily available.
2) If the chalav stam and chalav yisrael are both equal in price and quality, you should definitely only get the chalav yisrael.
3)Despite the teshuvas that indicate contradictory to the above, Rav Dovid shlit”a still maintains from his father that it is permissible even where it is readily available.