Quote: We have to bet this turn because we can't let spades draw
Being heads-up, I can't say I totally agree. Without a read or against default opponents, I agree. Must bet. But against opponents you know well, opponents you know will play any piece of the board this way, it is possible to be correct to just check.
I'm not saying that it's correct to check a lot, just that it's not always incorrect to check, and sometimes it's best to check.
I'd rarely check against a good LAG, as he'll recognize a pot-control check from a mile away.
Such players are very likely to pot the river with all their holdings, be they bluffs, weak made hands, monsters.
And then you are faced with a pretty ugly river decision.
On the other hand, those same players are not very likely to make a move on a the turn versus a player who has shown a lot of strength, so even vs. most decent LAGs, your turn decision is very easy if you get raised.
How is the river a ugly decisions if you know your up against a good LAG AND you know he knows that with checking the turn you have a hand that cant stand a lot of heat (ie. call if its likely he'll bluff). It gets interesting if he knows that you know he's likely to make a play on the river...(if your still following me)