Good, I was going to say that there are coupon codes out there. Not sure if they work on Amazon. But, fuck Amazon anyway.
Interesting to hear about the new fixture weight. My ARA 41 Atreum bars and the rails that they attach to are a little heavy. Nothing crazy, but pretty beefy. I mount my driver on the wall outside the tent. In the winter I will strap it inside the tent for some warmth.
They give a really even spread across the entire 4' space. Don't even have to go for crazy wattage with them. 480 watts in a 4x4 you saw that run. Mike is really cool and will help you out if you ever need anything. I'm glad to see someone like yourself, that I respect, buy one of their lights.They seem to be really on point with how they're doing things. I think the only LED makers that are at the same level (or higher) are Photontek/Lumitek. I love ChilLED too, but the ChilLED bars aren't long enough for my tastes. Nothing bad to say about ChilLED either, I would love to try one.
You can probably get a good spread in 3x5. Maybe a little dropoff around the edges/ends of the bars. I don't know what you are using now to compare though.