[NiceCatch]

There's alot of wisdom in what Mr. DuFresne said. I completely agree that it is much tougher to make those big laydowns (even when you know you should) at the higher levels, just because the amount of money in the pot is significant to your bankroll. I think building to 40 buy-ins is a great idea, and almost a guarantee that whether or not you are ready for the next level, you will be more apt to play correctly in big-pot situations.

I would especially say this is important when making the jump from 1/2NL ($200 max buy-in) to 2/4NL ($400 max buy-in), especially short-handed. The skill level of players at 2/4NL and above is seemingly leaps and bounds ahead of those at 1/2NL, and I've known several very good 1/2NL players who never managed to raise their games, despite very deep bankrolls (~$25k and more).... which is to say that, at the very least, a deep bankroll is a must.