Goal: 10K bankroll. Initial roll: 500$. Assume winning player @10-200NL. Furthermore, assume a increasing winrate at higher levels (in absolute $/hr terms, not bb/100).

Strategy 1:
Moving up when 25 buy-ins for next level; never step back. So moving to 50NL with 1250$.

Strategy 2:
Moving up when you have 4 buyins for the next level above 400. Lose 2, move back.
For example, start at 500 with 20NL, move to 50NL when you hit 700, move back to 20NL below 600; move up to 100NL with 900, move back to 20NL under 700. Etc.

Both strategies are low-risk, in the sense that you'll have a minimum of 25 buyins at all times.

Pros/cons?