I am going to be travelling from Wisconsin through IL, IN, OH, and parts of NY this summer. Is it worth using an Ipass or EZpass on the tollways? I read that Indiana does not give a discount for electronic toll paying and OH does not give discount for out of state passes. With this in mind, is it worth the expense and time to get a pass? I also found that to get an Ipass, you have to go to a retail outlet because their on-line and telephone ordering do not sell RV units. I try to stay off of interstate highways but in an effort to avoid city traffic, it looks like this trip will include more Interstate driving than my western trips.