what is the best bet on the casino? which bet gives me the best odds of winning?

well a sensible man would say to get the best odds don't go in , in the first place cos the odds are stacked against you from the start , but me i'd say blackjack

You might also try Video Poker. If played with the correct strategy, the player is said to actually have an edge over the house.

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"You gonna bark all day, little doggie, or are you gonna bite?" - Mr. Blonde from Reservoir Dogs

lol at you... i'd say blackjack too, but that's because i like cards!
craps is supposed to give good odds and the best single bet (odds wise is 'chasing the sixes' in roulette...)
i don't know...

actually roulette can be beaten against the house.
i, before poker, played roulette to a profit, and my granded had a great system (but i couldnt bankroll it to play it).
i will go into furter details later if you want.

all games are beatable if done correctly.
blackjack for instance, can be beaten by cardcounting. if the casinos catch u cardcounting they will ban you.
however, card counting is not illegal and a court of rule has ruled it is legitimate. If you would like there is more info here http://www.sydneycasino.info/
casinos win because most players dont use winning ssytems, and the losing plays easily cover the few who actually takle the time and effort of running them.