We are a small favourite vs a random hand so I would assume we are no worse than flipping equity wise vs his range given that we can assume he will be raising sb with his strongest holdings. By betting however, we will be able to realise more than our hot and cold equity. Villain will be forced to fold hands like KQT83, KQJ52, QJT73 and importantly he will almost never have a hand strong enough to c/r given that we have two aces, a seven and a six and any A23xx would have raised pre so to c/r he really needs a hand like 23477 or 23566 which we obviously block pretty heavily. Furthermore, by betting flop we will likely get checked to on turn which gives us a lot of flexibility to pot control bad turns like this one and bomb any turn where we still have the nut high, namely any A,K,Q,J,7,6 or 2 and put a lot of pressure on his weaker low hands.

In general hands where you have a very high chance of winning half the pot and a very low chance of winning the other half are good candidates to play very aggressively as getting a fold is your only chance of scooping.

The fact that we hold the other 2 cards on the flop we are really unlikely to improve to a FH or better. I'm not a big fan of building a pot here with top set when we have to give up the pot if the villain takes any aggression action on any street. I'm not saying that i prefer checking the flop i think we have to bet for the reasons Stephen stated below but i don't think potting is the best size on this texture as it should tighten up his continuing range to hands that are almost always freerolling us (lets not be results oriented people he's obv a 'special' case). By betting smaller somewhere over half to 3/4 pot he can continue a bit wider and hence fold on later streets where we can pot him off his weak lows on good runouts. Just seems gross that we have to fold to a x/r on this flop with top set always after potting.

Agreed Andrew.  Just a crappy flop for us really.   We dont want to give free cards on the flop to random 2 pair + live low draw etc hands and would like to be able to get him off of crappy lows on some runouts, thus we must bet or he wont opt to fold bad lows on later streets.  Problem is our life sucks if he ever check raises, especially since at this stage we dont know anything about villain.  

Although, him check raising us isnt a complete disaster as we have very low equity on further streets vs all hands he takes this line with.