Hi there,
I believe it is better to leave for reasons that don't have to do anything with your stack size and results. Unless that makes you feel comfortable and helps your psychology.
For example if the table is good and you feel great and have an edge against your opponents then why to leave that table? Because you double-up or triple-up? Maybe you double-up because you play on that exact table. But if you feel better psychologically to leave and book a winning day then do that. Psychology affects a lot ones game.
Also you might sit on a good table and take one or two bad beats. Then again if you think that the table is soft and you 're ok to continue then don't leave that.
And of course if you are tired, bored, tilting, have tough opponents, 'bad' seat, it is always good to leave the table either you lose or win.
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