My name is Abdelwedoud Cheikh. I'm from Mauritania in North Africa and I've been using Blender for almost 3 years. I tried Maya 2011 and Max 2013 but Blender is the one I recently used for architectural visualization.
About "Architecture Visualization V-Ray Blender:"
It was modeled in Blender 2.64 and rendered in V-Ray. Photoshop CS5 and Gimp were used as well. The rendering took about 1 hour and 10 minutes. You can watch my tutorial about how to build this house in Blender at: http://abdelsidi.posterous.com/167952519