Very nice Glenn.
For me it's going to come down to this Gotham Skyline or the 4A Alpha 2D(a) design.
I'll have to send you pics and give you a phone call as the color association will matter just as much as the design differences; the Gotham being a pure diffusor, while the 4A Alpha being a hybrid scatterer/diffuser/ absorber.
Best,
Anand.