Great thread!!!!
I only use the smart valves in my setup. It's far cheaper and more flexible than the kits. I am in a small space and the square shapes are better than round shapes. I run either 6" pots or cups in my trays. I like that I can mix and match. I can move my valve to anywhere in the tray if I need to space things out. The only kick is that I need to flush a couple times in flower if the plant has a greater than 60 day flowering time. I've played with root control fabric and wicking material along the way and did not gain anything. Now just run with 100% coco and use botanicare nutes. My newest addition is that I have a mirco-pore diffuser that sits infront of the valve on the rez to prevent clogs (and aerate the water). If you find the ceramic ones they last for life.
Blumats is what u are describing.