I have not had problems with my Stoker either. It just works. Solid as a brick in my opinion...
Most folks don't have problems with the Stoker itself but more likely the problems you see are configuration questions about setting up their home network, wireless routers, remote access, using with mobile phones, and the like, none of which affect the Stoker's ability to hold stable temps. I have had my network go down, my computer crash, etc, but the Stoker just keeps on working without missing a beat.
Also folks have problems with customer service, but I think Rock's is trying hard to improve in this regard... Poor customer service doesn't make the product bad but the overall experience could be better. Just my two cents...