I've looked at Stout's stuff and not been super impressed (made in China + durability issues). Honestly if you're going pro get a local stainless welder to build you something custom. It will take more time but be cheaper in the end, and you will have a dedicated stainless dude for the rest of your career. If you're not going pro, do you really want to use up half of your yearly allotment in one batch?
I know that Community Beer Works out of Buffalo NY has a Psychobrew system and LOVES it. They are a user on this site- I'd say send them a PM or a DM on twitter/facebook and see what they have to say about it.
I can't be arsed to keep up this list of what's in the fermenters, but hey, check out the cool brewery I own!
twitter.com/2kidsbrewing .. facebook.com/2kidsbrewing .. 2kidsbrewing.com