Hello Highway - It's the best!
Up until recently I was using long distance cards purchased at the local drugstore. The problem with these cards is that you never get the minutes you think you are paying for. Calling within our state to another area code costs 3 times more than I thought it would. Plus minutes sometimes mysteriously disappeared for no apparent reason.
With Hello Highway you get exactly what you pay for and you no longer have to enter multiple digit phone numbers and pass codes. I simple dial a local phone number and dial the person I'm calling. It even allows for speed-dialing. Hello Highway makes it simple and I highly recommend them to anyone.