Originally Posted by gianttray
You earn 1 tier credit for every $5 played through slot machines and 1 tier credit for every $10 played through video poker.
There really isn't a "best way", you should play what you want to play and for how long you play and you will earn credits if your card is inserted into the machine.
9/6 Jacks of Better Video Poker has a very low house edge and thats why many video poker players look for it. But note that at most casinos you will not find it unless you are playing $1 machines or higher, at some casinos they don't have 9/6 Jacks or Better unless you are playing $5 per credit or higher (where max bet is $25).
Play it again, Johnny Guitar