tricky multiway flop decision (live 5/10 NL)

[ArtVandelay]

The players:

SB (3k) is a very tough, loose-aggressive player. He's a good hand-reader and quite tricky.

MP (1.5k) is a bad LAG. He got stacked on a bad-beat about 5 hands earlier, so I suspect he's tilting somewhat.

I (1.7k) have gotten no cards, so I think my image is weak-tight.

Button (2k) is a straight-forward but solid TAG.

The hand:

MP limps, I limp next to act with T8s, and button makes it 50 go. SB, MP, and I call.

pot 210, and the flop is Ts7x6s (none in my suit)

SB checks, MP bets 175. What's my play?