Simple AA question: RR or shove?

[allhappythoughts]

Okay so this is probably something of a stupid, silly question but I found myself wondering this today during a hand that doesn't even really need to be posted. First hand, UTG I get dealt AA, I raise t120. Someone rr behind me t300. Another player calls. It folds around to me. So, to recap: I've been rr, one caller, and now it's to me. Does anyone even consider reraising it? I shoved and liked it, because I only want to go HU and if I take it down that's ~600 chips to my stack which is decent. I was just wondering if there's an argument to be made for reraising it (it seems to give too good of odds for others IMO).

[palman]

Usually in SnG's, when people re-raise you early, shoving is fine since they're likely to go with their hand. Sometimes I smooth call here planning to crai on the flop.

[hoyasaxa]

if you choose to reraise it make it something ridiculous, like 900, make sure that stacks get committed pf