Theoretical? I still make and use paper cue sheets. I would get a GPS unit if I were doing something really long again, but that’s not likely to happen again.

One big advantage of the ACA maps is that they contain a wealth of information that might be difficult and/or very time consuming to uncover doing your own planning, like camping locations. They also make great insulation for fast descents when you jersey is wet from climbing. No need to break out the windbreaker. Just put a map inside your top.