Archicad wins hands down on user-friendliness and document production IMO. If you're doing fairly simple building geometries then AC (or Revit .. haven't tried it but it has some ideas i think AC could learn from) probably makes sense.
On the other hand if you are doing more complex building forms then i have to say from what i've seen of Microstation (haven't used it myself since Uni) it leaves Archicad's modeling capabilities for dead. GDL will let create more complex forms and give them parametrics but it requires some programming. AC's modelling tools are not adequate for complex geometries and its base modeling engine is well overdue for a replacement IMO. The two big ones which will increasingly become a problem are its a surface modeller and it doesn't do NURBS. Pretty sure the first can't be fixed without a major re-write, not so sure about the second. No idea why they picked a surface engine over a solids engine .. so if anyone knows or is willing to speculate i'm very interested.
Anyway this may not been an issue for most people. I've been using AC since 96 and it has been great for what ever i've needed to do. Lately however i've been working on projects that have started to reach the limitations of AC form modelling abilities. This has partially been solved with the development of C4D<>AC exchange plugins. The two problems with this are:
1. Its not AC. This might be an issue for some.I didn't have a problem as we use it for rendering/animation anyway. My real issue is that all the tools we need to model forms should be part of AC. I'm hoping this is a stop-gap measure, my main fear is for how long.
2. Its dumb. Parametrics are fast gaining in popularity yet lately GS seems to have lost its lead in this area (within Architectural applications at least). None of the recent additions to AC's features incorporates them (like 'complex' profiles). Whilst you can model complex forms in C4D and give them a form of parametrics, they are reimported into AC as a non-parametric object. Good luck editing the script as they are the GDL equivalent of mapping the individual coordinates of a crumpled peice of paper.
Anyway getting to my point ... for me AC has the lead in interface and its documentation tools are generally outstanding whereas Microstation has a far superior engine. Both need to improve on their weaknesses but i feel that one of those weaknesses is a much more difficult issue to solve than the other and i'm not sure they have shown any intention of resolving it soon enough for some.
I recently went to a talk by one of Arups principles (Tristram Carfrae) on developing technologies being used for design on projects such as the
Beijing Aquatic Center. Form generation, structural analysis, 3D documentation straight to the fabricator ... nearly all of it using Microstation or software developed in-house to augment it. Design is heading this way (at least on a commercial/public scale) and Archicad is not keeping up with it.
When will Archicad be able to do this sort of thing?
www.smartgeometry.com
There were some Quicktime movies of parametric generative geometry modeling in use on City Hall and 30 St Mary Axe on Fosters page, but they don't seem to be working for me at the moment.
www.fosterandpartners.com
cheers,
Owen Sharp
Design Technology Manager
fjmt | francis-jones morehen thorp
iMac 27" i7 2.93Ghz | 32GB RAM | OS 10.10 | Since AC5