PokerStars No-Limit Hold'em Tourney, Big Blind is t600 (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: FCP)

BB (t8187)
UTG (t6569)
Hero (t3550)
CO (t5515)
Button (t7240)
SB (t5970)

Preflop: Hero is MP with A , J .
UTG raises to t1200, Hero shoves or folds?

Unless you have reason to believe he's very tight and would only make this raise with a dominant hand, I probably push this for a few reasons:
1) you're pretty short, with an effective M of about 3
2) you're in UTG+1, which means you have one more hand before the blinds take another big chunk out of your stack
3) in my $1.10, 45-turbo experience this is exactly the time you have to make a move to prevent yourself from becoming a complete non-entity at the table - if you fold and the blinds end up hitting you, it will be virtually impossible to make a run at the final table

snap push

4 left to act and you aren't even tripling the initial raise. You've got enough of a stack to dent someone, but you've lost FIV. This is borderline. We aren't in bad shape against an UTG raise, but we are getting called.

This is really close. I'd probably wait and open a pot myself, but AJ 6 handed is a really good holding, and a min-raise could just be a cheap way for UTG to steal the blinds.

Which do you hate more? Shoving into an opened pot without fold equity with 4 left to act, or folding AJ with an effective M of 2 (factor in the 6-handed table)?

I actually hate folding AJ more, and think we need to double. We hate a 3rd player coming into the mix, but that's pretty much out of our control at this point.

Especially in a turbo environment, you fold this you have about 8-10 hands to look at before you are *limping* with your stack. Ship it in, and start rooting for a jack.

I wouldn't mind getting called w/ AJ here because Hero will get called by hands like KQ and a variety of worse Aces (suited or not). The problem with folding and pushing the next hand is that although he'll have FIV to his advantage, he'll have to go through the entire table.

I'd be going here, and a lot earlier on. You are probably playing too tight in the later stages if you have allowed yourself to dwindle down to an M of 3 without making a stand.