Originally Posted by
abraxis
Yeah, I still call it the Eidan and that other, more expensive system the Toei.
Yes ... that would be the Toei subway.
Originally Posted by
abraxis
It's a real pain about not being able to transfer seamlessly.

Suica lets you travel pretty seamlessly.
Sure, you have to swipe out and swipe in again if you transfer from one system to the other, but the same card lets you ride both subway systems, and buses, and JR, and some taxis (KM and Nippon Kotsu last time I checked).