If you are planning to travel out of Tokyo even a day trip to Nikko or a little further to Kyoto, then JR pass is the way to go and select the JR line . Pasmo/Suica card is doable within Tokyo and is similar to tap and go card. You can load up whenever you need them (cash only for loading) .
a PASMO PASSPORT. This is a special IC card with privileges only available to overseas travelers who are visiting Japan. It can be used for train and bus travel in the Kanto area and all across the country where IC cards are accepted, and for electronic payments when shopping.
Where can I use PASMO PASSPORT? PASMO PASSPORT can be used for trains and buses in the Kanto area and across all of Japan. What should I do if I have an insufficient balance? Let the train staff or bus driver know when entering the ticket gate or when getting on or off the bus.
The Suica card is ready to use and already credited with 2000 yen (including a 500 yen deposit). To recover the deposit, you will have to return your card in Tokyo only, at JR East stations. You can keep your Suica card for your next trip. It will remain valid for 10 years.
Purchasing a Pasmo for your trip depends on what your itinerary looks like. If you are in Tokyo and you already have a Japan Rail Pass, you can ride all JR lines, like the Chuo line and Yamanote line, and be able to get to a number of popular tourist attractions in the area even without a Pasmo.
Do i need a Pasmo Card for my trip? With your JR Pass, you'll be able to ride JR lines within Tokyo, such as the Yamanote Line and the Chuo line, to access many places. However, if, for example, your hotel is located on a subway line, you may be taking the subway a lot, and for that a Pasmo is really convenient.
How to use PASMO. Simply touch your PASMO to the reader on the ticket gate to ride the train. Simply touch your PASMO to the reader inside the bus to pay the fare. PASMO can be used for easy electronic payments so there is no need to count out coins.
In addition to using your charged PASMO card to ride the subway or buses, you can use it to pay for items purchased at stores and vending machines. It can also be used for member shops of railways and buses nationwide where interoperability is offered.
Smart cards like Icoca, Suica and Pasmo are valid across Japan, so don't worry about which one you buy. You can use Icoca/Pasmo/Suica for all trains, subways and buses in Kyoto. You can also use Icoca/Pasmo/Suica at many shops, especially convenience stores. Buy Icoca cards from vending machines at JR Kyoto Station.
The only difference between PASMO and SUICA is who sells them. SUICA is from JR East, and PASMO is from Tokyo-area non-JR rail operators, including Tokyo Metro and Toei Subway. Wherever you can use SUICA, you can use PASMO, and vice versa. Same with charging with new amounts.