Long time lurker/first time poster. I owe this site a big thanks for making me a profitable player from day one (been playing about 9 months).

This is a hand from live play at $1/$2 NL at Foxwoods this weekend. I've been second guessing my play all day.

I was at a table full of average players plus two guys that were clearly stronger than the rest of us. I am one of four big stacks with about 4-5x the buy-in. Everyone else had $100 buy-in or less.

My opponent in the hand was a very skilled player with a stack equal to mine of about $400. He is a very aggressive player who is pretty loose pre-flop and extremely skilled post-flop.

My table image is tight and aggressive. I've only shown down three hands and I had pocket QQ each time helping me get to 4x buy-in.

Pre-flop:
Opponent raises $15 from early position. One other big stack and one small stack call, and I call with pocket 10's in late position. I'll note that pre-flop raises are simply not respected at Foxwoods. Most people will not consider folding until the raise gets above $20. Additionally, $15 was not a whole lot considering 3 big stacks involved in the hand.

Flop ($60 pot):
Q-10-9 with two diamonds.

Everybody checks to me and I bet $50. I considered slow playing for a millisecond but with the diamond draw and multiple straight draws, I was not going to give away any free cards with middle set.

The original raiser calls and the others fold.

Turn ($160 pot):
Edit: 4 clubs

Original raiser checks again and it is on me.

Three questions:
1) What do you think of my bet on the flop?

2) What do you think opponent has?

3) What is your move?

I'll post the play of the hand and my thinking after some responses.

Thanks for any advice.

Edit: Thanks bair for pointing out my omission.