I tried two of the Comic Readers on Windows today: C Display X (snappy title) was the most intuitive to use but the install process required an opt-out of a browser plugin and search engine change.
Comic Rack simply asked for donations, which seems fair as I'm happy to pay on a commercial OS. However it felt very powerful but complicated. Clicking didn't do things on context but acted as a toggle, page turning is via page up and down rather than the arrow keys.
Nothing really felt right.