Most innovative company in the world, dominant market position, awesome products, successful customers
Pros
Great compensation, lots of mobility win the company, great coaches among sales leadership. Market leading products and relentless pace of innovation that addresses problems customers didn't even know they had. Holiday parties are amazing with performers like Cyndi Lauper and the bare naked ladies. CEO just gave out 500 tickets to employees for game 2 of the SF Giants in the World Series. 5 weeks of vacation, paid paternity leave, time off for foundation work.
Cons
Can be a grind, success depends on territory (but that is the life of sales, not unique to salesforce). Moving into management can take a while. Resources like sales overlay teams for complementary products, sales engineering, are scarce or not competent and your succes can depend on them.