The Skinny on this.
Neither is correct - without relating it to the game at hand - and without clarifying whether they are talkinbg about a full bankroll or a "trip" or "session" bankroll.
I imagine that Andy is relating to he former and Semyon is relating to the latter. Of what good is 200 units in a shoe game where you are using a modest 12 to1 spread.
You bet your Max bet of 12 units. You get a pair of 8's against the dealer's 7. You split and create a hand of 11 and 10. You double them both and you now have two stiff hands. The dealer flips over a face card. You have just lost 48 of your 200 units. 24% of your 200 unit bankroll. 200 units is only acceptable if you have a time-limited session of less than an hour; and even then I would never endorse it.
Use 1,000 - 6 deck S17 game
Use 1,200 - 6 deck H17 game
Use 1,200 - 8 deck S17 game
Use 1,400 - 8 deck H17 game
These numbers are only reflective of a "reasonable" Risk of Ruin.
I believe that, under most circumstances, IF, the bet spread is
nearly optimal and play is virtually perfect, the R.O.R. will be 13.5%
If the loss of your bankroll is a frightening thought, increase the above by 100 units.
If you are prone to insomnia or have hypertension increase by 200.
If you have peptic ulcers or have panic attacks or are under psychiatric care increase by 300.
If you are a cheapskate, give up blackjack and take up scrabble, go, bridge, or chess.
If your bankroll is easily replenished or you wouldn't lose a moment's sleep if your bankroll disappears, then stick with the above.