AA in BB

[JayKon]

5/10 blinds, live cash game

Me in BB $1,400
UTG $1000

UTG limps, 1 call, 1 raise to 30, folded to me. I raise 60 more to 90.

UTG reraises to 210 (120 more). All fold to me.

I've never played with this guy before and I usually play 1/2, 1/3, 2/5 blind games so it's somewhat new territory for me (The 5/10 blind game is the 2nd largest in my area and the largest [10/25] only spreads on Thrusday evenings).

That said, he just joined the game about hour before and had been playing solid. I was pretty sure he had a big pocket pair. He did lay down QQ earlier when an A was on the board, but not before putting about $300 in the pot.

I deliberated for a bit, trying to decide what to do.

I was only considering two moves:

1) reraise $400
2) push

What would you do and why?