I only know of one firm in Southern California that uses ArchGIS on a regular basis. At $20,000, for a basic package, most people can’t afford it. It’s a powerful tool though but it’s a “big picture” tool. You really only need it for large scale projects / regional planning. We used it quite a bit at Colorado State University, in the L.A. program. I wish that I had access to it these days…
Here’s part of a project we did for a Resort Design: USGS map draped over a TIN and Slope Analysis.
PG9.pdf
This is a Chip-board model that a few of us did (40+ hours each). I can tell you that while the experience of creating the model helped me visualize contours, GIS is a lot faster and more information rich.
PG10.pdf