[zaphod]

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I rarely coldcall raises with suited connectors unless there is another caller. I don't think they hit often enough for it to be worthwhile against one opp.

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This is my line too. But obviously you have to look at other factors too:
*If there are other players left that are capable of squeezing it is not a great move to call.
* How does my opponent play postflop? Will he fire multiple barrels? Will he pay me off if i hit?

But my standard move is to fold suited connectors if there is a raise before me and no call, evaluate to call or not if there is a raise and call, and call if more than one caller.