Pros
Like any large firm, you'll gain great experience and training. There are a lot of great people at Mintz, but the few bad apples are the ones with power, so it makes it difficult for the other partners to protect associates from getting stretched too thin, especially in the corporate section.
Cons
Mintz used to be a great firm where people worked hard but still had a semblance of a life outside of the firm. With broad mid-level management changes over the last 2-3 years, they are trying to grind as much as possible out of associates until they quit. Over the last 2-3 years, the junior-mid level associate classes have been decimated. People never used to leave Mintz for another firm because for a firm, it was a great place to work, but this has changed. They want to be a New York firm with the bottom line as their number one goal, but they're not. People went to Mintz so they wouldn't have to be at a sweatshop, but new management doesn't get it. On top of all this, if they want to be a NY sweatshop, then they need to at least pay people like it. Bonuses used to be competitive, but have taken a dive, and the salary scale is not on par with other firms in the higher class years.