Thanks for everyone's input, I appreciate it. I was thinking about purchasing AS2012 (which is compatible with Steam Edition), then upgrading to ASN at a later date. But I was also thinking about the two free weather engines mentioned, FSrealWX or fsxwx. In terms of storms (yes, i'm addicted to storm chasing, haven't gone one year without seeing a supercell) which is better at simulating them, AS2012, FSrealWX or fsxwx? Thanks, once again :smile: