The good: there is a ton of back content to read for just $10 per month. As a guy just getting into comics, it will take a long time to run out of things to read.
The bad: the app is very buggy. It constantly stalls on loading pages and the guided reading cuts off a lot of art. Repeated requests for support also went either unread or resulted in a "have you tried turning it off and on again" response. Rather than that, maybe fix the app.
Chupie Velez about Marvel Unlimited, v2.7.4