Both games you mentioned needs a lot of luck, specially Crazy time as it seldom hit that bonus round. Although there are a lot of options, but it's the sought after bonus that everyone is looking for.
As long as you are competing with the house you need a lot of luck before you can win, irrespective of the game that you choose.
If i have just one game to play to be the last, k prefer to just use it on roulettes. Either 2 or 3x. I do not like high multiplier. This will make the game not to be fun and I will only do that if I am in a hurry and not want to play the game for that time again.