Hand 1: I'd call

Hand 2: What are the sizes of the chip stacks? I'd fold pre-flop if I'm in early position and am the chip leader. If I decide to raise and get re-raised, I'm folding.

Hand 3: I'd lead out with a bet of about 2/3 the pot on the turn, fold to a re-raise and check/fold on the turn if called.

MisterW