AJ with Limpers in front, short stack

[TheBenfer]

OK - $5 SNG at Full Tilt.

Full Tilt Poker, NL Hold'em Tournament, 50/100 Blinds, 6 Players
LeggoPoker Hand History Converter

UTG: 1,915
MP: 2,895
CO: 3,180
Hero (BTN): 1,075
SB: 3,325
BB: 1,110

Pre-Flop: (150) J[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/heart.gif[/img] dealt to Hero (BTN)
UTG calls 100, MP folds, CO calls 100, Hero ???

I have been playing tight, although the hand before in the SB I raised PF, check-called a micro-bet on a rag flop, then check-folded to a larger bet on the turn.

UTG has been a decent player. Gets in a lot of pots, but isn't a fool.

CO has played a ton of pots and his stack has bounced up and down throughout the tournament.

What's my move here???