I bought a 90-P ADA stand a month or so ago. Very disappointed, it is nothing special and the paint job is one coat from an airbrush. Airgun... whatever it's called. I used a Mr. Clean magic eraser to remove the red marker where I had to drill holes to install the lighting stand, and the paint came off. I'd say the ADA cabinets are a big ripoff for what you get. No formica even!
The Aquavas stands look much better and the tanks look the same, and that looks like a great deal. Their light stand looks similar (square steel instead of round rods) and filters look just as high quality, just with the pump at an angle. I am thinking maybe I should have gotten Aquavas.
Now that I think about it, Aquavas light stand looks much sturdier than ADA grand solar stand.
Depending on where you live and your budget, the fact that Aquavas includes shipping in their price might be the dealmaker. The cost to ship my 90-P system (tank/filter/stand/aquasouil/everything else) across country was insane.