Grid #11 Redux with Nik HDR Efex Test

So now I'm starting to be fairly impressed by Nik HDR Efex.  Though I like the first version of Grid #11 processed in Photoshop CS5 HDR Pro, HDR Efex delivers visibly extra detail and color depth.  

The monochrome conversion was processed in Nik Silver Efex Pro with a light green filter and aqua/sepia split tone applied in Lightroom.

Camera: Nikon D700 

Lens: Nikkor AF-S 50mm f/1.4G 

Exposure: ISO 200, three brackets around f/11 @ 1/200s, tripod, RAW

Lighting: Direct daylight  

Location: Alley behind the Grand Center Artist Loft Studios GPS

Processing: Lightroom 3, Nik HDR Pro, Nik Silver Efex Pro