If you guys re-read Sauce's post it makes a lot of sense. He said that its a combo of skill, txture, risk, and that HE can do it with 8 buyins at 100nl, 10 buyins at 200nl, etc...b/c of the previous factors.

Overall these are the factors a skilled player should consider if he should move up/down, etc...If you have no idea about your skill level, txt, risk you're willing to take, then the standard BR strategy is to have at least 20 buyins for each level.