The Foundry is a decent system and many people love them. I had the Foundry 10.5 for nearly three years and it worked great for my purpose (extending my brew season into the winter months).
On the negative side I did not like how the unit would shut off with an error code if grain bits, hops etc. scorched the bottom of the kettle. Moisture is prone to getting behind the display screen fogging it up. And people complain that the recirculation pump is under powered but I found that it works just fine.
One of the biggest complaints most users had/have is an inherent design issue where the water between the malt pipe and the kettle wall was not being pulled into the recirculation flow when using the recirculation system. This will cause lower mash efficiency but can be easily fixed by lifting the basket a couple times during the mash. A newer mash basket design has been rolled out since I owned mine so this might not be an issue any longer.
On the positive side it gives you good value for the money. It is not complicated to use, it is compact in size, clean up is pretty easy and it stores almost anywhere. One of its biggest selling points is that you can use either 110 or 220 power. However in switching from the default 110 plug to 220 meant you either had to cut the 110 plug off the cord or build some kind of adapter pigtail... but Anvil/Blichmann may be offering a factory option now to eliminate that problem.
One of my favorite features was the delay start option on the control panel. You can fill the Foundry with strike water the night before and program it to begin heating water the next morning. Then when you are ready to start your brew day the water is already at strike temp.
All of the AiO systems from the major manufacturers are on par with one another. There will be differences in design or options and each will have its pro's and con's. You really can't go wrong with any of them.