There are people who target settings and play in a certain way, and I think that's important, but I really want to have fun with my favorite machines, so I'll play all day even if I think the setting doesn't seem right.
To be honest, I can't tell the setting without some kind of definitive hint, and sometimes I win even on machines that don't seem to be set.
Of course, I lose more often than not, but if I have to choose a machine that's probably set high but I don't like, or a machine that I like but has a low setting, I'm a fool who will choose the latter.
And when I get hooked on one machine, I'll want to play that same machine over and over again.
So, after one big loss, I stop playing it altogether, even though it was my favorite machine.