No matter what betselection you have, IF you don't have the right amount bet, it doesn't matter how good it is, it will lose in the End. I know from testing in RX, i've flatbet 1000s of spins with different betselections, and what i found IS 7 numbers is the optimal bet.
This is played with 1-7 numbers. it's a repeaters system. Good results from the first tests, and I try to figure out the optimal wingoal and stoploss, AND in my opinion the optimal stoploss for this one would be 250-300u, and the optimal wingoal would be then ~100-150u.
Moneymanagement is not my best side, but to be a successful player you must have good moneymanagement. IF your playing without a set wingoal and stoploss, you'll also lose in the End. So, anyone with more experience from real play in casinos could share their Moneymanagement secret for the benefit of all...
Procedure: Bet every number that hit, in a progressive bet upto 7 numbers, then STOP (1+1+1+1+1+1+1 number bet). When 7 numbers are bet, (+1u bet) and start a +1u progression, until hit, (or until Stoploss is reached). IF hit, restart bet with that single number hit.
(First tests was played with 1u bets)
8/10 Games won