I would concur in principle with the comments above. I started out using cheaper software i.e. Punch! when I was still building. It worked for simple things, but was not good for producing construction documents or complex custom projects.
My brother gave me a postcard to try out a trial of Envisioneer which a the time was version 1. I switched within the week.
I also use Sketchup practically everyday. Here are the reasons below for each:
Since I primarily work in custom home design and light commercial visualizations, Envisioneer is my tool of choice. I have tried Archicad, Chief Architect, Softplan, & Revit. All of them are excellent in their own right. I would say that Archicad and Revit are perfect if you are working with a design team and you need to share the 3D model, or if you are doing large commercial projects. They are optimized for this type of design work. However the price tag reflects this as well, as does the learning curve.
Chief Architect and Softplan are more targeted to the home construction industry.
Softplan is great if you want a great set of blueprints, and a few renderings. It doesn't integrate well with other programs that I use all of the time like Sketchup, Google Earth, and Adobe Acrobat 3D.
Chief Architect is a great package, but has a bit of a difficult learning curve if you are going to maximize it's capabilities. You can do just about anything you want with it...once you are a master! If you browse the chief forums you will find lots of frustrated people trying to figure out even basic things. I don't like to have to work that hard.
So I settled on Envisioneer for the following reasons:
1. Simple to learn and use.
2. Very powerful tools, especially roofs. It is the best on the market hands down!
3. Extremely flexible. I can import 3DS, dxf, dwg, & Sketchup models and use them in my model. They can then be saved to my catalog to be used over and over. I can export to 3DS, dxf, dwg to share in all autocad types of programs, as well as import into Sketchup. (more about that in a moment.)
4. Very powerful yet simple terrain tools. You can create just about any type of terrain you need to. For some this feature is very simple, others seem to struggle with how to use them effectively. I have posted several how to's on the Cadsoft forum on this topic.
5. Very simple method to create high quality renderings, both stills and animations.
6. There is no physical hardware lock etc. to use the software. You can install it on your desktop and laptop, provided you are the only user.
For some examples of what you can do exporting your design and using it in Sketchup, visit my blog here:
http://varchitec.blogspot.com/ I hope this helps in your search.
Regards,
Ed Staelens
President
Virtual Architec LLC