Yes Darrel I used Autocad for 22 years. I'm probably not the person to ask that question of as I'm still getting used to what Turbocad can do as I'm always limited to time to explore as I have to get on with 2D drawings which are my bread and butter work for Local Authority approvals. I have though, as you know by some of the work on my facebook page, started using the 3D facility. I have also recently used Turbocad's 3D facility to construct a complicated roof structures to try and see if I can get a Planning department to accept a proposal as I thought it would give a better idea of what's going on. I didn't use Autocad much for 3D and my main reason for the transition to Turbocad was price as Autocad is now, I think, very expensive. I must say though that Turbocad does seem to have some good architectural tools for 3D work and I hope to get to grips with these with the help of Don Cheke's tutorials which I have purchased. I should maybe also point out that I have had experience of using Solidworks for 3D for engineering design when wearing my other hat as a special purpose machine designer. I found Solidworks very good for parametric part production and assembly drawings!