everyone here is proli going to tell you if your just getting started with supplements to stick to the basics. protein, multi vitamin, bcaa's. if thats simular to what youv been doing, id suggest throwing in a creatine supplement for a month or two and see what kind of results you get from that.
but, everyone will also tell you your not going to gain any lean muscle with out a good clean (its ok to cheat if you just want some size) diet. and an intense well put together training program, with plenty of rest at night.
if your 6'2" and only 165 im guessing your pretty lean and could afford to take in a few extra calories.
with that in mind id recommend N Large 2 (squared) made by pro lab, its a good lean weight gainer (good calories and carbs)
for the multi vitamin, the only thing id ever recoment to anyone is universal's animal pack.
as far as the bcaa's it doesnt really matter what brand you decide on just find something cheep, its all the same.
try that out for a while and see what it does for you