When going to a casino, how much do you bet on slots at a time

[Darem1]

I play the penny slots to pass the time (and money) away. I don't play nickels nor quarters. When I get serious I play one and five dollar machines.
There is one ten dollar machine I like but it takes two coins to hit the feature, so that is $20 a pull. I limit my play on it, but I have won good money on it. I will play $1 progressive Wheel of Fortune for a short period of time since you have to play $3 to hit the jackpot. Most of the $$$$ played on a progressive machine goes toward the progressive, so the payback isn't too good unless you get the spin feature. If a machine isn't paying I will move to another one. Basically from my freeplay and gaming budget I play enough of the dollar machines to ensure we are asked back and get comp'd for everything. I will try for a bigger win for a limited time on the more expensive machines. When I am finished with them I will be back at the pennies.