Well, we're somewhat in the "same boat" then @livinguktaiwan. I do know the difference is that SMTs [Smart Media Tokens], once available (next HF?), will be "built in" to the coding of the Steem blockchain itself vs. SE tokens just "sitting on top" somehow. My educated guess is that is the basis for deeming SMTs more secure.

On the other hand, I've read not being restricted to the blockchain code gives the SE tokens more "flexibility," but have read nothing which explains why this is a positive attribute.

Guess maybe we'll both find out (if it ever becomes important ...) soon enough!