Pros
Pay rate is good. Pay rate as a contract attorney is the highest I've experienced in several years of doing contract work (although that's likely a function of the contract they have with the employing law firm). Employment has been steady (again, probably has more to do with the firm than Lexolution). You get paid holidays after a while. The staff is helpful, attentive, and friendly. They don't micromanage you and let you work at your own pace.
Cons
There are almost no raises. (Again, this is likely a function of the contract, not Lexolution.) So your pay -- in real dollars -- will decrease over time. My star ratings being rather low are a function of the realities of attorney contract work. A temp agency isn't going to offer career opportunities, have great diversity practices, offer work/life balance, or have a great culture.