I agree with above (naam vhannai laag lagyo..............ani dar pani........)...
DO your home-work first........No matter where you go, you have to understand few things.....
Consulting company are like government (necessary evils).....navhaya ni garo vhaya ni garo, especailly ppl with f1 status.
They are not there for socail services. Everyone out there is to make business and profit. these ppl are business minded person. They will do in the best interest of the company and money...
Third, there will be always few good and bad experinece people.
AT this point. money is not what you care about, care about papers and companythat doesn't hide things from you...