There are nor eal Pros and Cons.
I chose Fire Red cause i love charizard, Well The only thing is that there are some pokemon in Leaf Green u cant catch in Fire Red and vice versa.
No big deal though, and Deoxys from Green is better in Defence stats and worse on Attack stats while Red Deoxys is better in attack stats and worse in defence stats.
No more. Just make your choice thinking on what you like.
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Oh I forgot. Since we both are new in the community, would you like to be my friend?
If you dont want to Ill understand....BUAHHHHHHHHHHHH! LoL :D :D