FXTC, nice use of brush geometry. That is about as high-detail as you can get, using brushes. In the future, map meshes will further increase the detail level beyond even that.
I've noticed that the non-lightmapped meshes in CShop4 look kind of bad. Having pre-calculated lightmaps in the meshes, along with proper normals, makes a huge difference, and makes them look like they belong, instead of being odd-looking 3ds max geometry.
I was also playing with some irregularly-sized meshes, and notioced how hard it was to get them to the size I wanted, so they would fit in the map right. CS5 is much easier, in that respect.
WindowsXP Media Center Edition, Pentium 4 2.53 GHz CPU, 512 MB of RAM, GEForce4 MX 440