Pass... I want to have my books on my ereader(s), not via an app on my phone/tablet. It's also US only so couldn't subscribe even if I wanted to
Edit: same issues with Oyster, which is even more restricted as it's iOS only and I do not own any iDevices. As an aside, I got a tad confused when I first heard about Oyster as it's the name of the payment system for the bus/tube in London