I was thinking perhaps a little clarification might help since I see similar questions / discussion posts getting little attention as well. First off I am not looking for marketing data nor am I fishing for customers or competitors (although I would not turn away a potential client!). One of my responsibilities here is staying current on simulation software that we could or should be using. I can get plenty of rave reviews from the sales staff and tech support but I'm looking for people that use the software daily. I have been pretty lucky in that I have been able to test beta versions of a few different software releases but most of those experiences are not relevant. There has to be a few of you out there if companies like Zemax and Lambda Research are releasing new add-ins for SolidWorks and both Zemax and Optis were at SWW. If you would rather reply off-line please feel free to shoot me an email via my contact info.