I got my I-140 processed with Law Offices of Rajiv S. Kanna in EB1(OR) category. Mrs. Diane did an excellent job in filing I-140 and I-485/EAD/AP. They know what is best for their clients. Even though, I belong to CSC, I never had any problem in getting my application filed. I strongly recommend you to get their help if you want a professional, dedicated and the best assistance.