I have done one investment shop but not the current ones they have up now. I've steered clear of the ones that pay only like $25 because they look too complicated for the money, in my opinion.
However, I've done several bank shops with them for Kinesis and I really liked it. I did one for Maritz and it was ok. I have done a few for Reality Check but have found that most aren't really worth my time. Eh, c'est la vie.