Hand 1: Nice flop action. On the turn, either check-call or lead the pot. Putting a medium-sized bet out there is just going to build a pot when you either want to keep it small at this point (check-call being the best option) or take it down without a river (lead for pot).

Hand 2: Preflop, I would just call the raise. Disguise you hand, keep chips behind so you can check-raise the player who raised PF when you catch a nice flop, and get away from a flop of say 9QK cheap. 4-low-card hands can get expensive if you're sticking in big re-raises PF. I prefer A23K to A234/5. On the flop, I know you're now committed, but why not just check-call? You're not going to pick up the pot with this bet; therefore, the best option is to try to get maximum callers. But the PF re-raise is the biggest problem with this one.