The only thing I know here is that I want to make a commitment decision as early as possible. Neither do I want to get sucked in against my will, nor do I want to first pay and then surrender to a potential bluff. So how far do we go here?

Stacks are pretty deep which makes this kind of meh despite the check/raisers agression. c/r bet size, betting into two, doesn´t look like they are looking for a fold either.

flop caller - 19/11/calm over ~160 hands.
flop check-raiser 22/8/4.3 over ~150 hands.

Poker Stars $0.10/$0.25 No Limit Hold'em - 8 players
The Official 2+2 Hand Converter Powered By DeucesCracked.com

MP1: $26.65
MP2: $25.00
CO: $17.95
BTN: $28.35
SB: $25.60
BB: $49.30
Hero (UTG): $42.80
UTG+1: $15.00

Pre Flop: ($0.35) Hero is UTG with A A
Hero raises to $1, 2 folds, MP2 calls $1, 3 folds, BB calls $0.75

Flop: ($3.10) 2 J J (3 players)
BB checks, Hero bets $2.20, MP2 calls $2.20, BB raises to $7

Ugh, think I'm mucking here unless BB is bluffy.

wow, that's one of the tougher hands here.
but as chris said, i think i would also let this go

Easy fold imo, unless you have a read on him.

I agree its a fold, with stack sizes what they are and 2 cards that hit his range pretty hard on board you could consider a fold. But being this deep he is pricing himself in bigtime if he has a reasonable flush to which is also flipping with you. Those 2 things being said just fold and find a better spot.

Ok this sound nice

At the tables, I actually folded pretty quickly but in hindsight I wasn´t so sure anymore.