Option 1: Shove
Over 100 hands, he raises preflop with 15 of them, and has limped/flat called with another 4 hands. Of the 15 that were raised, he has 3 or 4 bet ~2 times. How many times has he called a 3-bet? How many times has he called a 4-bet? How many times has he folded to a 4-bet. PT3 gives us all this information. We want to rule out AA and KK. Every other hand we're happy to play against. Gather this information, make your best decision as the timer will allow, or fold to not risk chips. Villain will always call our shove with AA, KK, QQ, JJ, AKs, and sometimes AQs. If we can figure out his fold equity with these also important stats, we can justify shoving here. I ussually have no problem with stacking of with QQ preflop - I've run into KK once in the past year, and AA never, however this year has had a lot fewer hands for me than previous years (thanks Iraq!) - but if it happens it happens, and at the stakes I play it's not going to break the bank.
AA on the button. Two limpers, you raise 5bb, first limper folds and the second calls. Flop is low and co-ordinated, 569 with a flush draw. He checks, you bet (2/3 pot), he calls. Turn is an offsuit T, he checks.
With no information about or villain, (first hand) - I am happy to bet the pot on the turn - as the only hand that caught up to me is T9, and a pot-sized bet is shaking a lot of drawing hands and hands like Tp or 2p are likely to stay in and pay me. If I get raised here, I can start to consider I'm behind to a set, straight, two pair, and can consider slowing down my action. When you're beat, you're beat - and if you don't take the appropriate actions to find out if you're beat - you're going to lose a lot in the long run. Live game this is easy, bet and watch your opponent. He's going to give you information. In an online game it's easier to fabricate information, so you run into the trouble sometimes against craftier players.
It depends on your intuition, but a flat-call on the flop is a risky play for a set, and even riskier on the turn, so I'd expect a reraise on the turn from a hand like T9, 96, 65, or a set. A call would indicate I'm being drawn on, which is why I bet the pot. Given no infromation about our villain, I would look at his stack size, and compare it to the buy-in of the table to see if he was up. If he called here, I'd value bet most rivers.
Bet the flop (2/3s pot), check the turn.
Hand 4. Shorter effective stack
With no information about the flop, I am very happy to stack off here against a hand like KK-JJ, and that the flop contained little threat to him and he thinks his hand is best. If the board comes 3 low clubs, I remember he raised, but wouldn't shove with a hand like the nut flush, or a straight. Maybe he has a draw to a strong flush, or a draw to three of a kind (haha). I am figuring him for a hand like AK unimproved, or a big PP here. And am so very happy to stack off on most flops that play like this. Even against two pair, I'm gonna do him dirty.
But yes, hand 4 definitely depends on board texture.