I use an Atlas it leaves a lot for my retirement
I ride with a guy with gps - he's my back up plan. I usually map out my rides on Google maps and take notes that I clip to my windshield bag. My system gives me a chance to really look over my route before hand and take the time to get a feeling for where I'm going.
I have GPS on my phone & I finally got a chance to use it, pretty cool stuff, but I wouldn't be able to hear it on my bike and looking at it as I ride would be too much of a distraction.
With my notes I write large and can see my directions with a quick glance.