There seems to be a consensus - at least in books - of a "one size fits all" bankroll. I guess if you are just starting out you could use a rule of thumb, but I still feel it's wrong to do so.
1. What game you are playing and where ?
2. What is an acceptable WR ? (assuming a realistic rounds/hr figure)
3. What is your counting system ?
which leads us to a betting strategy as well as an SD/100 rounds.
4. What is the purpose of your play (recreation, semipro, pro) ?
5. What will happen if you lose all your BR ? Half of it ? Can you define an acceptable level of risk for losing it all ?
=> and we can then work on RoR
which gives us a real, custom-built BR requirement....
Obviously these are all interlinked and not all answers are straightforwards - but I am a big believer in working out BR (or having someone work it out for you
)
D.