The link doesn't seem to be working. I believe that I have worked with idac before for some FEA training and consultancy. They seem to know their stuff.
I have used Fluent for consultancy before and they seem to be somewhat lacking compared to the specific CFD consultancies. They seem to just use their technical support and development teams to undertake the work, although it can be useful if the model is really complicated and needs to be run...
It depends on what info you want out at the end.There are a few FEA/CFD packages that I could recommend, but they all cost quite a lot.
www.zeta-dynamics.com