First i doubt we will see Flight for a couple years. Secondly we have no idea what we are going to get. Third, it will take a long time to get decent add ons after it is released.

In other words, there is absolutely no reason to hold off purchasing FSX add ons. Imo of course.

yup,

exactly. Plus, we don`t know the business-plan behind, so we don`t even know if it will be oben to third-party addons. If not, the addons will come even slower and fewer, be it scenery or A/C.

I really cant see them locking out 3rd party add-ons.

They know that a very large part of FSX and previous FS's popularity and continued success is because of there expandability. If it turns out that Flight cant be expanded it will die out very quickly.

But like others have already said I think its quite a way off yet so keep adding to FSX for now and get the most out of it until the Flight add-ons start appearing.

Personal choice really, if you want to spend more or not.

Do you think the money you`ve spent so far has been worth it? If yes, then if you have the spare cash and are willing to spend it, it won`t hurt to spend more.

And once Flight is released, there is no guarantee you will like that game (just for argument`s sake).

In the end only you can answer. I haven`t spent any money on this game, but I certainly wouldn`t hold a grudge against anyone who did. As far as hobbies/past times go, this is a mighty fine way to spend your time.