If you like Alibre, then I suggest you get Alibre PRO for $160.
All you need is a student i.d.
http://www.academicsuperstore.com/it...=Alibre+Design
Totally compatable with express.
I am literrally in Pro-e class right now.
5 day class, and I can't do what I was doing in Alibre after 5 hours.
Stick with what you know.