Round Robin vs. Normal Accumulator

[ofcourseitwas]

If you believed you had a working system with an advantage on the bookies' odds, I have heard that you can multiply that advantage using an accumulator. With that said, if you wanted to bet doubles and had 6 selections to choose from in total, would it be more to your advantage to bet 3 linear doubles or use a Round Robin where it bets every possible permutation? (in this case, 15 bets)

[FleetFanatic]

Re: Round Robin vs. Normal Accumulator Depends if they all win or not, and at what odds.