To be honest, they all suck roughly equally. They all want to sell your ass as quickly as possible at the lowest price you will take the job. I worked with a bunch in NYC, they are all capable of finding you a job - Talener and JobSpring are pretty big in web development.

One thing I would recommend against is the daily rate. Some recruiters prefer it for some reason. Hourly only.

If you can get a direct deal with the employer, you can get much more money, but you must know somebody on the inside to do that.

p.s.

Always, always negotiate the overtime rate. In most places you can get 50% more for any hours over 40 per week.