I have my pro e accreditation, however I moved schools this year and I purchased Solidworks because Ive used it for 8 years in industry and school. i was tempted by spaceclaim, however because all my resources/sows use SW I decided to stick. All the CAD packages are very similiar..... however SW and Spaceclaim are easier to use. You need to think about: how many network users you need? home users? What you going to use it for? Also at the end of the first year, can you still use the software or do you need to pay for an update? I would get demos and have a go. Im in warwickshire, so if you need to come and see how we use it (yr7-yr11), let me know.