Pros
I'm a firm believer that the interview process is a two way street and that the way it's handled can tell you all that you need to know about a company. Those I spoke with were very transparent and did not hide when asked tough questions about the company's work life balance, culture or business goals. I felt that their answers were realistic and honest, something that you don't normally get, even after multiple rounds. The entire interview process took about 3 months (during multiple holiday periods) and while a little longer than most, there was plenty of open communication and I was provided multiple updates throughout this time. All of my follow up questions were not only welcomed, they were actually addressed.
Cons
If working for a company that has a high expectation of you to be be both caring and professional is a deal breaker, you're missing out!