Sadly, some of the best casino shoppers avoid them because of their ethical issues. I think that includes MickeyB, SteveSoCal and SoCalMama that I know of.
I am also on the list to say that I have worked with them for several years and have had nothing but positive experiences with them. MH is always very kind and way more responsive than most MS schedulers. I am always happy to do shops for them when asked. The reports are less overwhelming than some high end companies and simple to complete. One of the more enjoyable shops of all the companies I work with.
I have worked with them for years and have traveled all over for them. I always got paid. They can be difficult and demanding. They do respond quickly and will talk to you on the phone if you have questions. They are not good to work for if are new to these types of shops. The pay is a little higher than some other companies that do this type of work.