Should I upgrade?

Kvn11 said: (post #337232)

In terms of reliability, I'd assume CS6 & CC are a bit more stable, considering that they're more recent versions. But in my experience, I've never had any issues with Flash 8 (though it's been ages since I've done anything in Flash). Thus, I wouldn't be too concerned about reliability (unless you are already experiencing problems with Flash 8).

For compatibility, you can use Flash 8 fla files on CS6/CC, but not vice versa. If you make an fla in CS6 and then try to open it in Flash 8, it will give you an error message. This may be a problem if you download a resource kit fla, and then realize it's not compatible with Flash 8 (although most resource kits from the Maplemation resource section do work with Flash 8). Or, if you are collaborating with someone else to make an animation, but you both use different versions; when one of you passes over the fla, the other cannot open it.

Anyways, I'd recommend you at least try out CS6. If you don't like CS6 for any reason, it is perfectly fine to stay with Flash 8 (actually, a good amount of people here still use Flash 8). Although, I'm pretty out of the loop when it comes to Flash, so you may want wait for other people's responses before making a decision.