Pros
Very professional service. Great way for new accountants to build their resume and start networking. As an SPS Consultant, you are paid even during the downtime in between contracts, which motivates Accountemps to find you new opportunities more quickly. Also you receive the appropriate benefits that come with a full-time position.
Cons
Generally, they expect an employee to work as an SPS Consultant for about 2 years before you start looking to get hired full-time at the companies you contract with. A firm wanted to hire me while I was 5 months in, which resulted in a lot of pushback from Robert Half. Eventually, the firm was able to come to an agreement with Robert Half to steal me away. Expect some tension if you find yourself in a similar situation.