I will probably stay 4-5 days in Tokyo, thatLs why I am considering the PASMO card.In that case, go for Pasmo or Suica. I recommend Suica because it is also valid in some areas outside of Tokyo.
As for the 1 Day Travelcard, I was thinking of the one that covers both metro operators (Toei Subway as well as Tokyo Metro). IsnLt that the Ichinichi Jyosha Ken ticket for Yen 1,000?
It does not cover the most convenient Yamanote Line, and, in my opinion, is overpriced. Few tourists will spend more than 1000 yen on a single day on subway travel.
I assume that with both ''lines'', I can cover almost every single place within Tokyo (geopgraphically speaking), canLt I?
No, there are a few places that are not covered, e.g. Odaiba. And sometimes connections are less convenient than with trains that are not covered by the pass, particularly the Yamanote Line.