Speaking about unbeatable benefits, here are some for Flash
Animated Graphics
This has always been the strong suit for Flash. Flash templates or Flash website designs look and feel a lot more live and help make the website diffrentiate itself from the others typically because of animation effects.
Compatibility across Platforms
Of the many popular browsers Flash templates are supported on most of them. To put it differently, almost all of them have the ability to render Flash. The hassle-free plug-in for Flash takes away all the trouble of working to make a web site behave itself in Internet Explorer, Firefox, and Chrome.
Vector Graphics
These are particular kinds of graphics that have the reputation for looking crystal clear in the internet browser. If combined with the strength of a flash template, the smooth lines and sharp animation are a treat to look at.
Video
Embedable videos on Youtube and web pages is simply one more thing Flash is popular for. Now again, the Flash makes it no difference what OS you have - videos or animation are going to be rendered beautifully, the only thing you need is deploy the Flash player plugin.