When's the right time to get up and leave a table?

[Evolution Crisis]

I play at 0.5/1 on party and have been doing fairly well; but today I ran really well on one table in particular. From $25 to $100 in under 2 hours, no stats as no PT, now the table was pretty loose but when people started to leave more sat down and although the table was still running ok for me the 3 new ppl seem to be sharks... Is it time to get up and leave right away or hope the fish that are left will rebuy?

[jrz1972]

Congratulations on your good session. Use your profits to buy PokerTracker. That will do more to help your game than worrying about when to leave a given table.

[Wario]

If your expectation at that table is greater than that of the best available table then stay, if not I would leave.

In other words, simply stay if you feel it's still a good table.