In case of wagering, it just has to be dice. You can't really stand with limbo at 1.01x. Dice is the best with its 1.0102x. But in case of multipliers starting from 1.2x and onwards, I'd really prefer limbo for the first reason you listed: choosing the side. It pisses me off when I hit the multiplier in the wrong side. Also, my longest 2x losing streak was on dice, rolling high. Limbo is just straight forward. Choose the payout and roll. When I desperately need a 2x, I tend to roll empty bets until I hit like 3-4 reds in a row. Then I use martingale and that generally does the work for me. So in my case, wager in dice, profit in limbo.