Yea i have to agree if it aint broke dont try and fix it. I have used Pro/E Inventor Solidworks, and I worked for autodesk for a time as well as Product One (Pro/e). By far the best package for me is inventor, but I know that productivity is more important than prefrence in the industry and Solidwoks sheetmetal is by far one of the best that i have used. My recomendation is dont switch unless u are not getting the support that u need from the reseller. Hope this helps casue i have been in this industry almost 10yrs now and i am the senior desiner for a company called Kemix ( Kemix (Pty) Ltd : Home ) So hope this helps cheerz Byron