Based on a recent post, I decided to check out Todd Architectural Models at York yesterday and was happy I did. Doug's line of models is even more impressive in person than online. Having an open section of wall at the back of my layout, Doug's shadow boxes were a perfect fit.
I purchased a two piece 4-story model with a loading dock, and a one piece 3-story model which should fit behind some track:
Doug said that he had been building architectural models for quite a few years, and that experience certainly carries through to these models. The detail is excellent. The two piece model comes in two halfs with an overlapping column so that the joint appears seamless (in addition, there are small notches at the top capital and at the loading dock so that everything lines up). All the brick details and edges are sharp and definitely stand out. The window mullions are not just simple "sticks", but even they have some little detail.
The interior structure is also very well thought out. There is a chase running up one side of each section and between each floor of the building which will make running lines for some LED lights very easy (there are also two openings in each "ceiling" for lights).
I am very pleased with my purchase, and assuming the clearance works with my articulated steamers, I will definitely be adding some additional pieces to my back wall (the model which Doug introduced at York is also impressive).
I do have one regret... I forgot to take a picture of the Barbie Warehouse. Unfortunately, you can't unsee something like that 
