Pros
We know as employees that we are working for a very sound financial company. That lends a certain degree of job security to what we do. Also, while it is a very sales driven culture to work in which can be stressful, you do know exactly where you stand performance wise. Since it is very numbers driven, it is very cut and dry as to whether management believes you're doing a good job...you meet goal you're doing good, if you don't meet goal you're not. Also, JPMorgan Chase is a top flight organization when it comes to technology and tools for their employees.
Kontras
There is no attempt to even hide the fact that everything is driven by your sales numbers. This push for sales can be at times very stressful and allows little leeway for other factors that may lead to more job happiness, such as acknowledment for a good job, etc. Also, management is chosen for having been able to produce at their sales goals in their pre-management role. While this is certainly done on a fair and equal basis, that isn't necessarily mean that a top salesperson is going to make a great or even good manager.