You have two choices.

[sthief09]

the problem with waiting to raise every flop is that there are a good amount of flops where it's entirely unprofitable to be raising, like AKx. the problem with using discretion is that we don't get him to fold every time he's willing to. while it might be unprofitable to take a shot at an AKx flop, there still is some folding equity, the times QQ-66 decide not to peel one or don't think you're full of it. so by raising every flop, you're playing suboptimally, but by showing discretion you aren't maxing out your folding equity.

capping preflop has the problem that you're putting in an extra sb (2 actually since he has to match your cap) which gives him more enticing odds to run you down or peel a card when he has 99 on an AQx board just to see if you'll check the turn. a follow up bet after a preflop cap and flop bet is probably a bit less strong looking than one after calling preflop and raising the flop.

EDIT: I need to rethink the above paragraph because it's wrong but I can't right now

so I think it's going to depend on your opponent. against someone who is loose and aggressive, we are better off keeping the pot smaller to reduce his bluffing odds in case you flop bad, and to punish him more for betting a 6 outer.

against a tighter player, I like building a pot while striking some fear in him, which will hopefully force him to make a mistake later in the hand, like folding QJ on a ragged flop getting 9.5-1

I hope you decide to cross post this to MHS