Scenery (or aircraft) by Cloud9

Hello,This thread could go as easily in the FsX forum because it's not sim dependant.What I want to askI have been looking at some of the airports, published by Cloud9. They look great, they're prize is correct in that it represents the quality of the addon. So far, I haven't bought because I don't know Cloud9. I'm worried that, as with some other download addon's, the number of installations is limited. Since I often change my pc setup rather drastic (motherboard, cpu,...) such a limitation is, to put it lightly, often a problem. (Except for the addon's I bought from Flight1).Now, I have searched their website for some info and so far I have found nothing relevant (Or I didn't search enough).To doublecheck... has anybody relevant info about cloud9 and possible installation restrictions?thanksLuc 'Glaudrung' Brusselmans