I used RAM Advanse for two years, but have switched over to RISA 3D since the end of September 2003. I have found that RISA is much better for us. It is the little things like triangular Finite Elements, and the ability to just enter in general member properties, where RAM would not let us do that. RISA now does concrete, although we did prefer the Advanse concrete detailer much more. RISA also allows the use of tension and compression only springs, where RAM does not. One of the biggest things that bothered us is that Advanse is not their hard-core main program, and it seems to get pushed to the side. RISA 3D is RISA technologies main program, and thus is their top priority, especially with their new floor program being integrated, but still driven off of the RISA 3D. In regards to support, I can tell you that RISA support is much better than RAM, and they are not afraid to tell you if you have modeled something correctly or not, and if the results are accurate. We purchased RISA for $2000, and it was a steal as far as we are concerned. You can download trial software to see how it goes. RISA learning curve is a little slower than RAM, but once you get on to it you can model as fast if not faster than in RAM, and the results will give you a warm fuzzy feeling. Just a note from someone who isn't sold on RAM Advanse, who has engineered some fairly large structures with it.
Aggman