Down to 4 - what would you do?

[gmunny]

Home tourney- Down to 4 players out of 21 left. Pays top 6. Top 4 paid aprox. 640/350/250/160. This is from memory so chip stacks are approx.

SB (7,000)
BB HERO (9,000)
UTG (16,000)
Dealer (3,000)

Blinds 300/600

SB posted 300
BB Hero posted 600
UTG raised to 1500
Dealer raised all-in to 3000
SB Folded
Hero (AJos) ??

UTG is an experienced player and has been playing smart/aggressive- I felt he had Ax, KQ-KT or PP. He could have been on a blind steal, but I haven’t seen him actually see him do it and he would usually show minimum of Ace or 2 paints when raised preflop. His play that I’ve observed was that he would usually limp and then fire or re-raise on flop. I felt he would at a minimum call.

Dealer been playing somewhat tight and not too agressive (not sure if he was comfortable w/short-handed play)- although he was short stack, put him A8+, PP, K-paint.

I'm thinking either fold or raise to isolate. What would you do?

Thanks,
G$