Players:
BB - Hero - $1100 - Ad 6d 3s 4c
UTG - Tight passive fish - $1600
UTG+1 - Good Regular - $1000
UTG+2 - Whale - $1500
UTG+3 - Random recreational - $1000 - (new to table, no reads, never played with him)
HJ - Whale - $1500
CO - Loose aggressive regular - $2200
Btn - Passive fish - $650
SB - Fishy tag player - $1000 - loose from blinds, but playing tighter than other players

Preflop:
SB calls, Hero calls $3, UTG+1 calls $5, UTG+2 calls $5, UTG+3 raises to $15, HJ calls $15, CO calls $15, Btn folds, SB calls $10, Hero calls $10, UTG+1 calls $5, UTG+2 calls $5.

Flop($110): 9d 5s 2d (7 players)
SB checks, Hero checks, UTG+1 checks, UTG+2 checks, UTG+3 bets $50, HJ calls $50, CO calls $50, SB calls $50, Hero?

In this spot, my first inclination is to call since I have good odds + can overflush someone on the turn. But if I do hit a flush, I'm not sure how likely I am to get paid off since this is a 7-way pot on the flop. I think players are capable of laying down bare 95 on the flop, bare wraps, and probably sometimes even 22. Whenever players have the nuts, I have often seen them just pot it on the flop. Kind of leads me to believe UTG+3 probably doesn't have a set or at most bottom set and I think 99/55 would flop raise from any of the remaining players as well. I'm wondering if its better to just pot now for $410, or if you think its more +EV to call. I think another benefit of raising is that bare wraps without a FD will probably just fold the flop right now. But like I said, benefits of calling or cheap price and keeping in worse flush draws in the hand as well. What do you think is better here?