I own a Magellan GPS, carried this for years. I had to make a decision on weight, and my GPS is heavy. I am using the GPS of my Samsung Smartphone, and have an app called Map Me. This tells me if I am walking in right direction, it would not activate on the train, too much metal I think. I will find a way to put the long and lats using my phone.
I do very little planning before entering a city. I have not got lost yet, or made any large off track decisions. Most travelers seem to enjoy the planning, the chaos, and all the anticipation. Personally, I am 100 percent sure I am going to arrive at a destination. If you realize, to have the presence of mind to take all these small video clips while in the middle of chaos is way beyond want normal travelers have the capacity to do.
What you are hearing in my frustrations is that I just do not like Europe travel, for the most part just miserable type of living, the lifestyle here in Europe is really horrible compared to the rest of the planet.
Most people invest hours in planning, that needs to be added onto the amount of time it takes to walk, or get to the hotel. I find that I spend my time reading, enjoying life, while most travelers spend 3 hours per day making plans, I spend about 1 hour, so optimally efficient. The planning is down as I arrive.
I am very different traveler, I do not consider planning a trip as enjoyable I just do the minimum, and spend my time enjoying the day.