First of all, many experienced shoppers have spent years researching, tracking and researching some more to compile a list of what they consider the best companies. This list is a valuable resource that they've worked hard to create. If you ask that it be handed to you with no effort on your part, it's the equivalent of you getting out of a taxi at the 25th mile of a marathon and expecting someone who's run the entire race to carry you to the finish.
Second, you must be prepared to work hard and spend a lot of time reading, searching and keeping great records. If you're not prepared to do this, you should know up front that you will not succeed at mystery shopping.
Third, even if a list of the "best" companies was given to you, it wouldn't necessarily be a list of the best companies for you. MSCs can be regional, national or international. They may have no jobs in your area. Shoppers may prefer MSCs with a certain type of client, and you may have no interest in that same client. They may take three months to pay, which some don't mind and others do.
There is a link to a list at the bottom of each forum page that will direct you to legitimate MSCs. Experienced shoppers recommend that you sign up for a minimum of 100 if you want to get a good idea of what types of jobs are out there (and who offers them.)
This forum really has a wealth of knowledge. Please read the New Mystery Shoppers section and use the forum's search function if you have a question, because it probably has already been answered.
Best wishes!
This part is only for the hens who wear comfortable shoes: please add anything I've left out.

Go ahead, ask me to violate an ICA. I won't do it, and the MSCs that read the board will know not to hire you, since you can't be trusted.
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