Pros
Great benefits! I get $1,000 excused off my Regions Home Mortgage each year just for continuing to work there. Regions also matches 100% on the first 6% contributed to your 401k. With so many locations, you can pretty easily transfer to another branch even in a different state with your job staying the same. I have had several friends want to move in their careers to be closer to family, etc and it was very easy for them to do so. I have also not seen many get fired due to poor performance or sales skills, one of the advantages of not getting paid much is that your too cheap to let go!
Cons
Very hard to get noticed individually at such a large company. I have been working for Regions Bank for 4 years, have a Finance Degree and a MBA from a State School, and have been one of the top 3 producers out of 25 for the past 3 years and have never received a single promotion still working in a entry level position.