Input Wanted: Hand Decision

This is a hand from a tournament I played in the other night. I've been debating with myself whether I played this hand right postflop so I've decided to ask for input.

The hand occurs after were already in the money but it's still early after the money bubble.

Full Tilt Poker Game #5221922500: $5 + $0.50 Tournament (38945611), Table 16 - 600/1200 Ante 150 - No Limit Hold'em - 1:00:58 ET - 2008/02/12
Seat 1: delmop (25,759)
Seat 2: Dannydm (39,903)
Seat 3: williams1 (82,255)
Seat 4: Jhouse1968 (38,512)
Seat 5: Montezuma67 (29,326)
Seat 7: dooce_kikker (32,450)
Seat 8: Jordan4523 (29,720)
Seat 9: lifesagrind (34,505)
antes 150
dooce_kikker posts the big blind of 1,200
The button is in seat #5
*** HOLE CARDS ***
Dealt to lifesagrind [Ks Kd]
lifesagrind raises to 3,600
Dannydm calls 3,600
williams1 calls 3,600
dooce_kikker calls 2,400

As you can see my raises were getting plenty of respect.

*** FLOP *** [9d Td 5d]
dooce_kikker has 15 seconds left to act
dooce_kikker bets 28,700, and is all in

This guy took all of his time to make this play. I'm next to act so I have a tough decision to make.

What do you do?

I have plenty of options here and I'm not sure I made the right one. I'm not troubled about the decision because of the outcome. I'm troubled because it was a tough spot. I also feel a little lost on what the correct play is in this position.