gto = game theoretically optimal
i make the standard raise no matter my hand when i'm playing with people that i know will pay attention. however, my standard raise is not 2.5 or 3 times the big blind. it is based on how much is in the pot. for example, if 3 people limp in, i'm not going to raise it to 3 times the big blind (because they will all call).
when i play in games where people don't pay attention to that, i try to raise the exact amount that is just enough to accomplish what i want. for example, if i'm stealing the blinds with junk, i might try 3 times the big blind, but if i get pocket aces and want to steal the blinds, i'll raise 6 times the big blind. when people only play based on their cards, they will call 3x and 6x virtually the same, so i prefer to get more money in when i have a great hand and put just enough money in when i have a questionable hand.