St Louis Agency Pay Rates

Hey I work as an agency nurse for a decent st louis agency been with them for 3 years! I also have a full time job. The agency I work for has excellent benefits such as up to $350 a month for health insurance, weekly bonuses and other benefits. Unfortunately to qualify for most of these benefits you need to work for them full time. I have a full time job and need to pick up shifts on the side for extra money, so I am not looking for benefits...just straight cash. I need responses on which staffing agency in st louis pays the most cash per hour for RNs. Like I said not looking for benefits... just the cash per hour. Or a listing of all the st louis staffing agencies would be nice too!