Vantaggi
I worked as the lead sales consultant. The criteria to keep your job is aggressive to say the least. If you don't meet the numbers, you are gone pretty quickly. The commissions are great if you can make the numbers. Best for younger, highly networked, and "hungry" applicants. You have to want the sales badly in order to be successful here. Which isn't a bad thing, just be prepared to close the sales leads from marketing in addition to meeting your own personal sales goals within your personal network. Management is just ok. My concern is they are over worked which results in them just contacting you when something isn't going well. The training is complete and detailed. Fun stuff include getting services at no charge when they are training new staff members.
Svantaggi
long hours, super aggressive goals, no loyalty, increased responsibilities. No management on site, so the "team" has to work together. This works only sometimes. The exceptions are when other team members slack off or don't do their job. No one is there to deal with the problem. And do not ask them to help you with anything, as "that's not their job".