UTG villain (57/23 over 30 hands, fishy tendencies but not a solid sample size) just lost a sizable pot the hand before when his 2-pair ran into quads. He proceeds to insta-shove the next hand. I look at AQo UTG+1, and under normal circumstances (even with a SS pushbot in UTG) I would fold this because I'm a nit, but I saw an opportunity to pick up chips.

I elected to call his 51BB shove... my question is should I have shoved all-in rather than call? After I call I proceed to get 2 others players to come along for the ride

After the flop that I whiffed, BTN bets ~1/4 pot in to me after I check. Was this a bad check, or should I have led out on the turn? The only thing I have at the moment is a BDNFD and 2 overs . I just don't think that BTN is bluffing/betting this without any piece of the board.

Poker Stars $0.01/$0.02 No Limit Hold'em - 8 players
The Official 2+2 Hand Converter Powered By DeucesCracked.com

Hero (UTG+1): $5.38 9/6 at this table through 81 hands
MP1: $10.79
MP2: $6.03
CO: $5.38
BTN: $4.32 69/7/3.9 - 81 hands,
SB: $12.32
BB: $5.00
UTG: $1.02 57/23 - 30 hands

Pre Flop: ($0.03) Hero is UTG+1 with A Q
UTG raises to $1.02 all in, Hero calls $1.02, 3 folds, BTN calls $1.02, SB calls $1.01, 1 fold

Flop: ($4.10) 2 6 9 (4 players - 1 is all in)
SB checks, Hero checks, BTN bets $1.16, SB folds, Hero ???

Thanks for any input you might have!